detachChangeCreation(oControl, fnCallback) {
			var sFlexReference = FlexRuntimeInfoAPI.getFlexReference({element: oControl});
			if (Array.isArray(mChangeCreationListeners[sFlexReference])) {
				mChangeCreationListeners[sFlexReference] = mChangeCreationListeners[sFlexReference].filter(function(fnRegisteredCallback) {
					return fnRegisteredCallback !== fnCallback;
				});
			}
		}
Removes a previously registered callback function by reference.

@param {sap.ui.core.Control} oControl - Reference control to get the flex reference
@param {function} fnCallback - Function reference to be removed
@private
@sapui5-restricted sap.ui.rta