refactor(ErrorObservable): remove needless type param from ErrorObser…

…vable.create()

BREAKING CHANGE:

src/observable/ErrorObservable.ts

@@ -54,7 +54,7 @@ export class ErrorObservable extends Observable<any> {
  * @name throw
  * @owner Observable
  */
- static create<T>(error: any, scheduler?: Scheduler) {
+ static create(error: any, scheduler?: Scheduler): ErrorObservable {
  return new ErrorObservable(error, scheduler);
  }