fix(shareReplay): no longer exporting function unnecessarily

Author: benlesh

src/operators/shareReplay.ts

@@ -13,7 +13,7 @@ export function shareReplay<T>(bufferSize?: number, windowTime?: number, schedul
   return (source: Observable<T>) => source.lift(shareReplayOperator(bufferSize, windowTime, scheduler));
 }
 
-export function shareReplayOperator<T>(bufferSize?: number, windowTime?: number, scheduler?: IScheduler) {
+function shareReplayOperator<T>(bufferSize?: number, windowTime?: number, scheduler?: IScheduler) {
   let subject: ReplaySubject<T>;
   let refCount = 0;
   let subscription: Subscription;
@@ -48,4 +48,4 @@ export function shareReplayOperator<T>(bufferSize?: number, windowTime?: number,
       }
     };
   };
-};
+};