Removes opacity tween from action input to make colors match

src/elements/input.less

@@ -284,7 +284,6 @@
 }
 .ui.action.input > .button {
   display: table-cell;
-  opacity: 0.9;
 
   border-top-left-radius: 0px;
   border-bottom-left-radius: 0px;
@@ -299,7 +298,6 @@
 }
 
 .ui.action.input > input:focus ~ .button {
-  opacity: 1;
   -webkit-box-shadow: 0px 0px 0px 1px rgba(0, 0, 0, 0.2) inset;
   -moz-box-shadow: 0px 0px 0px 1px rgba(0, 0, 0, 0.2) inset;
   box-shadow: 0px 0px 0px 1px rgba(0, 0, 0, 0.2) inset;