Remove legacy font formats

All modern browsers use woff2, IE11 still needs woff. Other formats are no longer used.

Author: jobvs

styles/web/css/fonts/glyphicons-halflings-regular.eot

@@ -266,13 +266,8 @@ th {
 }
 @font-face {
     font-family: 'Glyphicons Halflings';
-
-    src: url('./fonts/glyphicons-halflings-regular.eot');
-    src: url('./fonts/glyphicons-halflings-regular.eot?#iefix') format('embedded-opentype'),
-        url('./fonts/glyphicons-halflings-regular.woff2') format('woff2'),
-        url('./fonts/glyphicons-halflings-regular.woff') format('woff'),
-        url('./fonts/glyphicons-halflings-regular.ttf') format('truetype'),
-        url('./fonts/glyphicons-halflings-regular.svg#glyphicons_halflingsregular') format('svg');
+    src: url('./fonts/glyphicons-halflings-regular.woff2') format('woff2'),
+        url('./fonts/glyphicons-halflings-regular.woff') format('woff');
 }
 .glyphicon {
     position: relative;