Kill the card animation

It slows things down, especially on mobile devices and on the stream
where many annotations are loaded at once, and it doesn't add much
as it is.

Close #1119

h/static/styles/common.scss

@@ -678,29 +678,6 @@ blockquote {
   }
 }
 
-.thread.ng-enter,
-.thread.ng-leave,
-.thread.ng-move {
-  @include transition-duration(.25s);
-  @include transition-property(max-height);
-  overflow: hidden;
-
-  .threadexp { display: none; }
-}
-
-.thread.ng-leave.ng-leave-active,
-.thread.ng-enter {
-  @include transition-timing-function(cubic-bezier(0, 1, 0, 1));
-	max-height: 0;
-}
-
-.thread.ng-enter.ng-enter-active,
-.thread.ng-leave {
-  @include transition-duration(.1s);
-  @include transition-timing-function(cubic-bezier(1, 0, 1, 0));
-	max-height: 65536px;
-}
-
 
 //MAGICONTROL////////////////////////////////
 .magicontrol {