Convert warning links to govuk-link--destructive

Converts links in the following:
- the page-footer component
- the table component
- the browse-list component
- the notification status, when reporting failures
- validation messaging in the whitelist page

app/assets/stylesheets/components/browse-list.scss

@@ -16,19 +16,6 @@
     margin-bottom: $gutter-half;
   }
 
-  &-link-destructive {
-    color: $error-colour;
-
-    &:visited,
-    &:link {
-      color: $error-colour;
-    }
-
-    &:hover {
-      color: $mellow-red;
-    }
-  }
-
   &-hint {
     @include core-19;
     margin: 5px 0 10px 0;

app/assets/stylesheets/components/page-footer.scss

@@ -8,26 +8,9 @@
     line-height: 40px;
     padding: 1px 0 0 15px;
 
-    a {
-
-      &:visited,
-      &:link {
-        color: $error-colour;
-        display: inline-block;
-        vertical-align: center;
-      }
-
-      &:hover,
-      &:active {
-        color: $mellow-red;
-      }
-
-    }
-
   }
 
   &-delete-link-without-button {
-    @include core-19;
     padding: 0;
     display: inline-block;
   }

app/assets/stylesheets/components/table.scss

@@ -212,15 +212,6 @@
       color: $error-colour;
       font-weight: bold;
 
-      a {
-
-        &:link,
-        &:visited {
-          color: $error-colour;
-        }
-
-      }
-
       .status-hint {
         display: block;
         font-weight: normal;
@@ -356,22 +347,12 @@
       background: transparent;
     }
 
-    &:hover {
-      color: $link-hover-colour;
-    }
-
-    &:active,
-    &:focus {
-
-      color: $black;
-
-      &:before {
-        border-color: $yellow;
-        border-style: solid;
-        border-width: 15px 3px 15px 15px;
-        right: -3px;
-      }
-
+    &:active:before,
+    &:focus:before {
+      border-color: $yellow;
+      border-style: solid;
+      border-width: 15px 3px 15px 15px;
+      right: -3px;
     }
 
   }