diff --git a/packages/core/data/observable/index.d.ts b/packages/core/data/observable/index.d.ts
index b972635bf..f28756d12 100644
--- a/packages/core/data/observable/index.d.ts
+++ b/packages/core/data/observable/index.d.ts
@@ -164,17 +164,6 @@ export class Observable {
 	public _isViewBase: boolean;
 	//@endprivate
 
-	/**
-	 * This method is intended to be overriden by inheritors to be notified when a new listener is added
-	 * count is the number of listeners for that event after addition
-	 */
-	onListenerAdded(eventName: string, count: number);
-
-	/**
-	 * This method is intended to be overriden by inheritors to be notified when a new listener is removed
-	 * count is the number of listeners for that event after removal
-	 */
-	onListenerRemoved(eventName: string, count: number);
 	
 }
 
diff --git a/packages/core/data/observable/index.ts b/packages/core/data/observable/index.ts
index 79cc52ead..8c3dd8a46 100644
--- a/packages/core/data/observable/index.ts
+++ b/packages/core/data/observable/index.ts
@@ -95,8 +95,6 @@ export class Observable implements ObservableDefinition {
 	public off(eventNames: string, callback?: any, thisArg?: any): void {
 		this.removeEventListener(eventNames, callback, thisArg);
 	}
-	onListenerAdded(eventName: string, count: number) {}
-	onListenerRemoved(eventName: string, count: number) {}
 
 	public addEventListener(eventNames: string, callback: (data: EventData) => void, thisArg?: any): void {
 		if (typeof eventNames !== 'string') {
@@ -116,7 +114,6 @@ export class Observable implements ObservableDefinition {
 				callback: callback,
 				thisArg: thisArg,
 			});
-            this.onListenerAdded(event, list.length );
 		}
 	}
 
@@ -143,11 +140,9 @@ export class Observable implements ObservableDefinition {
 						delete this._observers[event];
 					}
 				}
-				this.onListenerRemoved(event, list ? list.length : 0);
 			} else {
 				this._observers[event] = undefined;
 				delete this._observers[event];
-				this.onListenerRemoved(event, 0);
 			}
 		}
 	}