remove unneeded destruct methods as GC has higher performance (#6631)

Co-authored-by: Tim Fry <tim@voipstratus.com>

app/basic_operator_panel/resources/classes/basic_operator_panel.php

@@ -44,16 +44,6 @@ if (!class_exists('basic_operator_panel')) {
 			}
 		}
 
-		/**
-		 * Called when there are no references to a particular object
-		 * unset the variables used in the class
-		 */
-		public function __destruct() {
-			foreach ($this as $key => $value) {
-				unset($this->$key);
-			}
-		}
-
 		/**
 		 * Get the call activity
 		 */