Remove unused animated-ellipsis (#15515)

Author: evanpurkhiser

src/sentry/static/sentry/less/misc.less

@@ -21,27 +21,3 @@ img {
 .no-border {
   border: 0 !important;
 }
-
-// Animated ellipsis...
-
-.animated-ellipsis:after {
-  overflow: hidden;
-  display: inline-block;
-  vertical-align: bottom;
-  -webkit-animation: ellipsis steps(4, end) 1.5s infinite;
-  animation: ellipsis steps(4, end) 1.5s infinite;
-  content: '\2026'; /* ascii code for the ellipsis character */
-  width: 0px;
-}
-
-@keyframes ellipsis {
-  to {
-    width: 1em;
-  }
-}
-
-@-webkit-keyframes ellipsis {
-  to {
-    width: 1em;
-  }
-}