Remove unused resources.

briar-android/src/main/res/drawable/ic_emoji_activity.xml

-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-        android:width="24dp"
-        android:height="24dp"
-        android:viewportHeight="24"
-        android:viewportWidth="24">
-	<path
-		android:fillColor="#000000"
-		android:pathData="M7.5,7.5C9.17,5.87 11.29,4.69 13.37,4.18C15.46,3.67 17.5,3.83 18.6,4C19.71,4.15 19.87,4.31 20.03,5.41C20.18,6.5 20.33,8.55 19.82,10.63C19.31,12.71 18.13,14.83 16.5,16.5C14.83,18.13 12.71,19.31 10.63,19.82C8.55,20.33 6.5,20.18 5.41,20.03C4.31,19.87 4.15,19.71 4,18.6C3.83,17.5 3.67,15.46 4.18,13.37C4.69,11.29 5.87,9.17 7.5,7.5M7.3,15.79L8.21,16.7L9.42,15.5L10.63,16.7L11.54,15.79L10.34,14.58L12,12.91L13.21,14.12L14.12,13.21L12.91,12L14.58,10.34L15.79,11.54L16.7,10.63L15.5,9.42L16.7,8.21L15.79,7.3L14.58,8.5L13.37,7.3L12.46,8.21L13.66,9.42L12,11.09L10.79,9.88L9.88,10.79L11.09,12L9.42,13.66L8.21,12.46L7.3,13.37L8.5,14.58L7.3,15.79Z"/>
-</vector>
\ No newline at end of file

briar-android/src/main/res/drawable/ic_emoji_animals_nature.xml

-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-        android:width="24dp"
-        android:height="24dp"
-        android:viewportHeight="24.0"
-        android:viewportWidth="24.0">
-	<path
-		android:fillColor="#000000"
-		android:pathData="M18.7,12.4c-0.28,-0.16 -0.57,-0.29 -0.86,-0.4 0.29,-0.11 0.58,-0.24 0.86,-0.4 1.92,-1.11 2.99,-3.12 3,-5.19 -1.79,-1.03 -4.07,-1.11 -6,0 -0.28,0.16 -0.54,0.35 -0.78,0.54 0.05,-0.31 0.08,-0.63 0.08,-0.95 0,-2.22 -1.21,-4.15 -3,-5.19C10.21,1.85 9,3.78 9,6c0,0.32 0.03,0.64 0.08,0.95 -0.24,-0.2 -0.5,-0.39 -0.78,-0.55 -1.92,-1.11 -4.2,-1.03 -6,0 0,2.07 1.07,4.08 3,5.19 0.28,0.16 0.57,0.29 0.86,0.4 -0.29,0.11 -0.58,0.24 -0.86,0.4 -1.92,1.11 -2.99,3.12 -3,5.19 1.79,1.03 4.07,1.11 6,0 0.28,-0.16 0.54,-0.35 0.78,-0.54 -0.05,0.32 -0.08,0.64 -0.08,0.96 0,2.22 1.21,4.15 3,5.19 1.79,-1.04 3,-2.97 3,-5.19 0,-0.32 -0.03,-0.64 -0.08,-0.95 0.24,0.2 0.5,0.38 0.78,0.54 1.92,1.11 4.2,1.03 6,0 -0.01,-2.07 -1.08,-4.08 -3,-5.19zM12,16c-2.21,0 -4,-1.79 -4,-4s1.79,-4 4,-4 4,1.79 4,4 -1.79,4 -4,4z"/>
-</vector>

briar-android/src/main/res/drawable/ic_emoji_emoticons.xml

-<?xml version="1.0" encoding="utf-8"?>
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-        android:width="24dp"
-        android:height="24dp"
-        android:viewportHeight="24"
-        android:viewportWidth="24">
-
-	<path
-		android:fillColor="#000000"
-		android:pathData="M15.4839,3.8557 C14.8224,3.89611,14.9476,5.06823,15.4034,5.47978
-C16.7652,6.93176,17.1508,8.98786,17.299,10.9051
-C17.4081,13.1214,17.2144,15.4608,16.1275,17.4387
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-C15.2618,20.6719,16.1617,19.8774,16.5955,19.4508
-C18.5872,17.7088,19.4632,15.0228,19.5268,12.4373
-C19.5469,10.5193,19.295,8.516,18.3141,6.8329
-C17.6499,5.74222,16.9234,4.59896,15.8167,3.91355
-C15.6887,3.86763,15.5784,3.84987,15.4839,3.85564 Z M5.91182,7.65831
-A1.3631614,1.3631614,0,0,0,4.54866,9.02147
-A1.3631614,1.3631614,0,0,0,5.91182,10.3846
-A1.3631614,1.3631614,0,0,0,7.27498,9.02147
-A1.3631614,1.3631614,0,0,0,5.91182,7.65831 Z M8.98492,10.6595 L8.98492,12.7042
-L13.756,12.7042 L13.756,10.6595 L8.98494,10.6595 Z M5.83527,14.1306
-A1.3631614,1.3631614,0,0,0,4.47211,15.4938
-A1.3631614,1.3631614,0,0,0,5.83527,16.857
-A1.3631614,1.3631614,0,0,0,7.19843,15.4938
-A1.3631614,1.3631614,0,0,0,5.83527,14.1306 Z"/>
-</vector>
\ No newline at end of file

briar-android/src/main/res/drawable/ic_emoji_flags.xml

-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-        android:width="24dp"
-        android:height="24dp"
-        android:viewportHeight="24.0"
-        android:viewportWidth="24.0">
-	<path
-		android:fillColor="#000000"
-		android:pathData="M14.4,6L14,4H5v17h2v-7h5.6l0.4,2h7V6z"/>
-</vector>

briar-android/src/main/res/drawable/ic_emoji_food_drink.xml

-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-        android:width="24dp"
-        android:height="24dp"
-        android:viewportHeight="24.0"
-        android:viewportWidth="24.0">
-	<path
-		android:fillColor="#000000"
-		android:pathData="M12,6c1.11,0 2,-0.9 2,-2 0,-0.38 -0.1,-0.73 -0.29,-1.03L12,0l-1.71,2.97c-0.19,0.3 -0.29,0.65 -0.29,1.03 0,1.1 0.9,2 2,2zM16.6,15.99l-1.07,-1.07 -1.08,1.07c-1.3,1.3 -3.58,1.31 -4.89,0l-1.07,-1.07 -1.09,1.07C6.75,16.64 5.88,17 4.96,17c-0.73,0 -1.4,-0.23 -1.96,-0.61L3,21c0,0.55 0.45,1 1,1h16c0.55,0 1,-0.45 1,-1v-4.61c-0.56,0.38 -1.23,0.61 -1.96,0.61 -0.92,0 -1.79,-0.36 -2.44,-1.01zM18,9h-5L13,7h-2v2L6,9c-1.66,0 -3,1.34 -3,3v1.54c0,1.08 0.88,1.96 1.96,1.96 0.52,0 1.02,-0.2 1.38,-0.57l2.14,-2.13 2.13,2.13c0.74,0.74 2.03,0.74 2.77,0l2.14,-2.13 2.13,2.13c0.37,0.37 0.86,0.57 1.38,0.57 1.08,0 1.96,-0.88 1.96,-1.96L20.99,12C21,10.34 19.66,9 18,9z"/>
-</vector>

briar-android/src/main/res/drawable/ic_emoji_objects.xml

-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-        android:width="24dp"
-        android:height="24dp"
-        android:viewportHeight="24"
-        android:viewportWidth="24">
-	<path
-		android:fillColor="#000000"
-		android:pathData="M5,16L3,5L8.5,12L12,5L15.5,12L21,5L19,16H5M19,19A1,1 0 0,1 18,20H6A1,1 0 0,1 5,19V18H19V19Z"/>
-</vector>
\ No newline at end of file

briar-android/src/main/res/drawable/ic_emoji_recent.xml

-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-        android:width="24dp"
-        android:height="24dp"
-        android:viewportHeight="24.0"
-        android:viewportWidth="24.0">
-	<path
-		android:fillColor="#000000"
-		android:pathData="M11.99,2C6.47,2 2,6.48 2,12s4.47,10 9.99,10C17.52,22 22,17.52 22,12S17.52,2 11.99,2zM12,20c-4.42,0 -8,-3.58 -8,-8s3.58,-8 8,-8 8,3.58 8,8 -3.58,8 -8,8zM12.5,7H11v6l5.25,3.15 0.75,-1.23 -4.5,-2.67z"/>
-</vector>

briar-android/src/main/res/drawable/ic_emoji_smiley_people.xml

-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-        android:width="24dp"
-        android:height="24dp"
-        android:viewportHeight="24.0"
-        android:viewportWidth="24.0">
-	<path
-		android:fillColor="#000000"
-		android:pathData="M11.99,2C6.47,2 2,6.48 2,12s4.47,10 9.99,10C17.52,22 22,17.52 22,12S17.52,2 11.99,2zM12,20c-4.42,0 -8,-3.58 -8,-8s3.58,-8 8,-8 8,3.58 8,8 -3.58,8 -8,8zM15.5,11c0.83,0 1.5,-0.67 1.5,-1.5S16.33,8 15.5,8 14,8.67 14,9.5s0.67,1.5 1.5,1.5zM8.5,11c0.83,0 1.5,-0.67 1.5,-1.5S9.33,8 8.5,8 7,8.67 7,9.5 7.67,11 8.5,11zM12,17.5c2.33,0 4.31,-1.46 5.11,-3.5L6.89,14c0.8,2.04 2.78,3.5 5.11,3.5z"/>
-</vector>

briar-android/src/main/res/drawable/ic_emoji_symbols.xml

-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-        android:width="24dp"
-        android:height="24dp"
-        android:viewportHeight="24.0"
-        android:viewportWidth="24.0">
-	<path
-		android:fillColor="#000000"
-		android:pathData="M12,7.77L18.39,18H5.61L12,7.77M12,4L2,20h20L12,4z"/>
-</vector>

briar-android/src/main/res/drawable/ic_emoji_travel_places.xml

-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-        android:width="24dp"
-        android:height="24dp"
-        android:viewportHeight="24.0"
-        android:viewportWidth="24.0">
-	<path
-		android:fillColor="#000000"
-		android:pathData="M18.92,6.01C18.72,5.42 18.16,5 17.5,5h-11c-0.66,0 -1.21,0.42 -1.42,1.01L3,12v8c0,0.55 0.45,1 1,1h1c0.55,0 1,-0.45 1,-1v-1h12v1c0,0.55 0.45,1 1,1h1c0.55,0 1,-0.45 1,-1v-8l-2.08,-5.99zM6.5,16c-0.83,0 -1.5,-0.67 -1.5,-1.5S5.67,13 6.5,13s1.5,0.67 1.5,1.5S7.33,16 6.5,16zM17.5,16c-0.83,0 -1.5,-0.67 -1.5,-1.5s0.67,-1.5 1.5,-1.5 1.5,0.67 1.5,1.5 -0.67,1.5 -1.5,1.5zM5,11l1.5,-4.5h11L19,11L5,11z"/>
-</vector>