Removing Exploding CSS Setus

Removes a couple of hover styles 
that are most of the time even overriden.

app/assets/javascripts/diffs/components/diff_file_header.vue

@@ -224,7 +224,7 @@ export default {
       <a
         ref="titleWrapper"
         :v-once="!viewDiffsFileByFile"
-        class="gl-mr-2"
+        class="gl-mr-2 gl-text-decoration-none!"
         :href="titleLink"
         @click="handleFileNameClick"
       >

app/assets/stylesheets/framework/dropdowns.scss

@@ -189,15 +189,6 @@
   background-color: $gray-darker;
   color: $gl-text-color;
   outline: 0;
-
-  // make sure the text color is not overridden
-  &.text-danger {
-    color: $brand-danger;
-  }
-
-  .avatar {
-    border-color: $white;
-  }
 }
 
 @mixin dropdown-link {
@@ -216,11 +207,6 @@
   text-align: left;
   width: 100%;
 
-  // make sure the text color is not overridden
-  &.text-danger {
-    color: $brand-danger;
-  }
-
   &.disable-hover {
     text-decoration: none;
   }
@@ -232,10 +218,6 @@
     @include dropdown-item-hover;
 
     text-decoration: none;
-
-    .badge.badge-pill {
-      background-color: darken($blue-50, 5%);
-    }
   }
 
   &.dropdown-menu-user-link {

app/assets/stylesheets/framework/secondary_navigation_elements.scss

@@ -28,10 +28,6 @@
         text-decoration: none;
         color: $black;
         border-bottom: 2px solid $gray-darkest;
-
-        .badge.badge-pill {
-          color: $black;
-        }
       }
     }
 

app/assets/stylesheets/framework/typography.scss

@@ -439,10 +439,6 @@
       content: '\f0c6';
     }
 
-    &:hover::before {
-      text-decoration: none;
-    }
-
     &.no-attachment-icon {
       &::before {
         display: none;

app/assets/stylesheets/framework/wells.scss

@@ -29,11 +29,6 @@
 
       .ref-name {
         font-size: 12px;
-
-        &:hover {
-          text-decoration: underline;
-          color: $gl-text-color;
-        }
       }
     }
 

app/assets/stylesheets/pages/diff.scss

@@ -70,10 +70,6 @@
       }
     }
 
-    a:hover {
-      text-decoration: none;
-    }
-
     &:hover {
       background-color: $gray-normal;
     }