Dialog: Removed code that removes active state from buttons on pagehi…

…de. Fixes #5111.

The code was added because close buttons still had active state when you closed and re-opened a dialog (#1839). I tested without the code and that issue doesn't occur anymore (nav takes care of removing active state).

js/widgets/dialog.js

@@ -59,9 +59,6 @@ $.widget( "mobile.dialog", $.mobile.widget, {
 				$target.attr( "data-" + $.mobile.ns + "transition", ( active.transition || $.mobile.defaultDialogTransition ) )
 					.attr( "data-" + $.mobile.ns + "direction", "reverse" );
 			}
-		})
-		.bind( "pagehide", function( e, ui ) {
-			$( this ).find( "." + $.mobile.activeBtnClass ).not( ".ui-slider-bg" ).removeClass( $.mobile.activeBtnClass );
 		});
 
 		this._on( $el, {