Remove outdated centering code for database switcher on install page

Signed-off-by: Jan-Christoph Borchardt <hey@jancborchardt.net>

core/js/setup.js

@@ -123,18 +123,4 @@ $(document).ready(function() {
 		drawTitles: true,
 		nonce: btoa(OC.requestToken),
 	});
-
-	// centers the database chooser if it is too wide
-	if($('#databaseBackend').width() > 300) {
-		// this somehow needs to wait 250 milliseconds
-		// otherwise it gets overwritten
-		setTimeout(function(){
-			// calculate negative left margin
-			// half of the difference of width and default bix width of 300
-			// add 10 to clear left side padding of button group
-			var leftMargin = (($('#databaseBackend').width() - 300) / 2 + 10 ) * -1;
-
-			$('#databaseBackend').css('margin-left', Math.floor(leftMargin) + 'px');
-		}, 250);
-	}
 });