Fix linter issues

src/main/kotlin/org/briarproject/briar/desktop/chat/Chat.kt

@@ -25,5 +25,4 @@ class Chat {
         val author = String.format("%s (%s): ", name, formatter.format(dateTime))
         messages.add(SimpleMessage(local, author, messageText!!, "time", true))
     }
-
 }

src/main/kotlin/org/briarproject/briar/desktop/chat/ChatHistoryConversationVisitor.kt

@@ -65,7 +65,8 @@ class ChatHistoryConversationVisitor(
 
     override fun visitIntroductionRequest(r: IntroductionRequest): Void? {
         chat.appendMessage(
-            r.isLocal, r.timestamp, String.format(
+            r.isLocal, r.timestamp,
+            String.format(
                 "You received an introduction request! Username: %s, Message: %s",
                 r.name, r.text
             )
@@ -94,5 +95,4 @@ class ChatHistoryConversationVisitor(
         }
         return null
     }
-
 }

src/main/kotlin/org/briarproject/briar/desktop/chat/ConversationMessageHeaderComparator.kt

@@ -10,5 +10,4 @@ class ConversationMessageHeaderComparator : Comparator<ConversationMessageHeader
     ): Int {
         return h1.timestamp.compareTo(h2.timestamp)
     }
-
 }

src/main/kotlin/org/briarproject/briar/desktop/paul/views/BriarUIStateManager.kt

@@ -13,8 +13,6 @@ import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
 import org.briarproject.bramble.api.contact.Contact
-import org.briarproject.briar.api.conversation.ConversationManager
-import org.briarproject.briar.api.messaging.MessagingManager
 import org.briarproject.briar.desktop.paul.theme.briarBlack
 
 /*

src/main/kotlin/org/briarproject/briar/desktop/paul/views/PrivateMessageView.kt

@@ -74,7 +74,6 @@ import org.briarproject.briar.desktop.paul.theme.divider
 import org.briarproject.briar.desktop.paul.theme.lightGray
 import java.util.Collections
 
-
 val HEADER_SIZE = 66.dp
 
 @Composable
@@ -206,9 +205,11 @@ fun ContactCard(selContact: MutableState<Contact>, contact: Contact) {
     }
     Row(
         modifier = Modifier.fillMaxWidth().height(HEADER_SIZE).background(bgColor)
-            .clickable(onClick = {
+            .clickable(
+                onClick = {
                     selContact.value = contact
-            }),
+                }
+            ),
         horizontalArrangement = Arrangement.SpaceBetween
     ) {
         Row(modifier = Modifier.align(Alignment.CenterVertically).padding(horizontal = 16.dp)) {