Removed redundant check in LoggerHierarchy::setRoot(). Root logger is always present since it's populated in the constructor.

git-svn-id: https://svn.apache.org/repos/asf/logging/log4php/trunk@1343189 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/src/main/php/LoggerHierarchy.php b/src/main/php/LoggerHierarchy.php
index 796626a..a00c27a 100644
--- a/src/main/php/LoggerHierarchy.php
+++ b/src/main/php/LoggerHierarchy.php
@@ -157,9 +157,6 @@
 	 * @return LoggerRoot
 	 */ 
 	public function getRootLogger() {
-		if(!isset($this->root) or $this->root == null) {
-			$this->root = new LoggerRoot();
-		}
 		return $this->root;
 	}