Remove CSS for scoped label doc link

app/assets/stylesheets/pages/issuable.scss

@@ -167,10 +167,6 @@
     }
   }
 
-  a.gl-label-icon {
-    color: $gray-500;
-  }
-
   .gl-label .gl-label-link:hover {
     text-decoration: none;
     color: inherit;
@@ -180,11 +176,6 @@
     }
   }
 
-  .gl-label .gl-label-icon:hover {
-    text-decoration: none;
-    color: $gray-500;
-  }
-
   .btn-link {
     color: inherit;
   }
@@ -826,10 +817,6 @@
           }
         }
       }
-
-      .gl-label-icon {
-        color: $gray-500;
-      }
     }
 
     @media(max-width: map-get($grid-breakpoints, lg)-1) {

app/assets/stylesheets/pages/labels.scss

@@ -460,8 +460,7 @@
 // Label inside title of Delete Label Modal
 .modal-header .page-title {
   .scoped-label-wrapper {
-    .scoped-label,
-    .gl-label-icon {
+    .scoped-label {
       line-height: 20px;
     }
 

app/assets/stylesheets/pages/milestone.scss

@@ -68,10 +68,6 @@ $status-box-line-height: 26px;
       .gl-label-link {
         color: inherit;
       }
-
-      .gl-label-icon {
-        color: $gray-500;
-      }
     }
   }
 

app/assets/stylesheets/pages/notes.scss

@@ -688,8 +688,7 @@ $note-form-margin-left: 72px;
     text-decoration: underline;
   }
 
-  .gl-label-link:hover,
-  .gl-label-icon:hover {
+  .gl-label-link:hover {
     text-decoration: none;
     color: inherit;