Revert "Merge pull request #822 from t3chguy/BaseDialog_restore_focus"

This reverts commit 0ac836919d, reversing
changes made to 7e07ffd55f.

src/components/views/dialogs/BaseDialog.js

@@ -47,16 +47,6 @@ export default React.createClass({
         children: React.PropTypes.node,
     },
 
-    componentWillMount: function() {
-        this.priorActiveElement = document.activeElement;
-    },
-
-    componentWillUnmount: function() {
-        if (this.priorActiveElement !== null) {
-            this.priorActiveElement.focus();
-        }
-    },
-
     _onKeyDown: function(e) {
         if (e.keyCode === KeyCode.ESCAPE) {
             e.stopPropagation();