Revert link color change in composer (#8784)

res/css/views/rooms/_MessageComposer.scss

@@ -58,10 +58,6 @@ limitations under the License.
     .mx_VoiceMessagePrimaryContainer {
         margin-right: $spacing-8;
     }
-
-    a {
-        color: $accent;
-    }
 }
 
 .mx_MessageComposer_autocomplete_wrapper {

src/components/views/rooms/MessageComposer.tsx

@@ -391,7 +391,7 @@ export default class MessageComposer extends React.Component<IProps, IState> {
                 &nbsp;
                 { replacementRoomId && (
                     <a href={makeRoomPermalink(replacementRoomId)}
-                        className="mx_MessageComposer_roomReplaced_link"
+                        className="mx_linkButton"
                         onClick={this.onTombstoneClick}
                     >
                         { _t("The conversation continues here.") }