Remove extra large-FOO-icon.png files

cms/static/sass/assets/_graphics.scss

@@ -8,38 +8,6 @@
 	cursor: move;
 }
 
-.large-slide-icon {
-	display: inline-block;
-	width: 100px;
-	height: 60px;
-	margin-right: 5px;
-	background: url(../img/large-slide-icon.png) center no-repeat;
-}
-
-.large-html-icon {
-	display: inline-block;
-	width: 100px;
-	height: 60px;
-	margin-right: 5px;
-	background: url(../img/html-icon.png) center no-repeat;
-}
-
-.large-openended-icon {
-	display: inline-block;
-	width: 100px;
-	height: 60px;
-	margin-right: 5px;
-	background: url(../img/large-openended-icon.png) center no-repeat;
-}
-
-.large-annotations-icon {
-	display: inline-block;
-	width: 100px;
-	height: 60px;
-	margin-right: 5px;
-	background: url(../img/large-annotations-icon.png) center no-repeat;
-}
-
 .large-advanced-icon {
 	display: inline-block;
 	width: 100px;
@@ -48,14 +16,6 @@
 	background: url(../img/large-advanced-icon.png) center no-repeat;
 }
 
-.large-textbook-icon {
-	display: inline-block;
-	width: 100px;
-	height: 60px;
-	margin-right: 5px;
-	background: url(../img/large-textbook-icon.png) center no-repeat;
-}
-
 .large-discussion-icon {
 	display: inline-block;
 	width: 100px;
@@ -64,12 +24,12 @@
 	background: url(../img/large-discussion-icon.png) center no-repeat;
 }
 
-.large-freeform-icon {
+.large-html-icon {
 	display: inline-block;
 	width: 100px;
 	height: 60px;
 	margin-right: 5px;
-	background: url(../img/large-freeform-icon.png) center no-repeat;
+	background: url(../img/large-html-icon.png) center no-repeat;
 }
 
 .large-problem-icon {