diff -r 6093dda9fe38 -r a9d04f5f5650 bootstrap-source/bootstrap-3.0.3/less/component-animations.less
--- a/bootstrap-source/bootstrap-3.0.3/less/component-animations.less	Sat Jan 18 12:34:36 2014 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,29 +0,0 @@
-//
-// Component animations
-// --------------------------------------------------
-
-// Heads up!
-//
-// We don't use the `.opacity()` mixin here since it causes a bug with text
-// fields in IE7-8. Source: https://github.com/twitter/bootstrap/pull/3552.
-
-.fade {
-  opacity: 0;
-  .transition(opacity .15s linear);
-  &.in {
-    opacity: 1;
-  }
-}
-
-.collapse {
-  display: none;
-  &.in {
-    display: block;
-  }
-}
-.collapsing {
-  position: relative;
-  height: 0;
-  overflow: hidden;
-  .transition(height .35s ease);
-}