remove 'PT Sans' to get rid of the fonts.googleapis.com import

fixes #1

Signed-off-by: Vieno Hakkerinen <txt.file@txtfile.eu>

layout/mixu-radar-briar/assets/css/style.css

-@import url(//fonts.googleapis.com/css?family=PT+Sans);
-
 body {
   margin: 0px;
 
-  font-family: 'PT Sans', Helvetica, 'Helvetica Neuve', Arial, Tahoma, sans-serif;
+  font-family: Helvetica, 'Helvetica Neuve', Arial, Tahoma, sans-serif;
   font-size: 17px;
 
   color: #333;