EAGLESIX-3009: Removed unnecessary memory related functions

lib/pipeline/matcher/NotMatchExpression.js

@@ -29,27 +29,6 @@ proto.equivalent = function equivalent(other) {
 	return other._matchType == 'NOT' && this._exp.equivalent(other.getChild(0));
 };
 
-/**
- *
- * Return the _exp property
- * @method getChild
- * @param i
- *
- */
-proto.getChild = function getChild(i) {
-	return this._exp.get();
-};
-
-/**
- *
- * Return the released child
- * @method releaseChild
- *
- */
-proto.releaseChild = function releaseChild() {
-	return this._exp.release();
-};
-
 /**
  *
  * Return the reset child