style: format code with Prettier and remove unused code

Change-Id: I382f39d142cfa29f192447b0d2c6d48e113327b4
diff --git a/options.css b/options.css
index ee8f611..89d01d3 100644
--- a/options.css
+++ b/options.css
@@ -1,18 +1,18 @@
 body {
-	padding:10px;
-	font-family:"Roboto", "Arial", sans-serif!important;
+  padding: 10px;
+  font-family: "Roboto", "Arial", sans-serif !important;
 }
 h1 {
-	text-align:center;
-	font-size:30px;
+  text-align: center;
+  font-size: 30px;
 }
 h2 {
-	font-size:20px;
+  font-size: 20px;
 }
 #languages {
-	-webkit-column-count:4;
+  -webkit-column-count: 4;
 }
 button#close {
-	display:block;
-	margin:18px auto;
-}
\ No newline at end of file
+  display: block;
+  margin: 18px auto;
+}