RN: Delete NativeEventEmitter Options

Summary:
Removes the `options` argument in the `NativeEventEmitter` constructor. It was only being used for an experimental flag that is no longer necessary.

Changelog:
[General][Removed] - Removed second optional argument of `NativeEventEmitter` constructor

Reviewed By: RSNara

Differential Revision: D26138239

fbshipit-source-id: 0481ce44f0464668e3a6e7ffaf079d17c87afd42

Libraries/EventEmitter/NativeEventEmitter.js

@@ -22,14 +22,6 @@ type NativeModule = {
   ...
 };
 
-type NativeEventEmitterOptions = $ReadOnly<{|
-  __SECRET_DISABLE_CALLS_INTO_MODULE_DO_NOT_USE_OR_YOU_WILL_BE_FIRED: boolean,
-|}>;
-
-const DEFAULT_NATIVE_EVENT_EMITTER_OPTIONS = {
-  __SECRET_DISABLE_CALLS_INTO_MODULE_DO_NOT_USE_OR_YOU_WILL_BE_FIRED: false,
-};
-
 /**
  * Abstract base class for implementing event-emitting modules. This implements
  * a subset of the standard EventEmitter node module API.
@@ -38,15 +30,9 @@ export default class NativeEventEmitter<
   EventDefinitions: {...},
 > extends EventEmitter<EventDefinitions> {
   _nativeModule: ?NativeModule;
-  _disableCallsIntoModule: boolean;
 
-  constructor(
-    nativeModule: ?NativeModule,
-    options: NativeEventEmitterOptions = DEFAULT_NATIVE_EVENT_EMITTER_OPTIONS,
-  ) {
+  constructor(nativeModule: ?NativeModule) {
     super(RCTDeviceEventEmitter.sharedSubscriber);
-    this._disableCallsIntoModule =
-      options.__SECRET_DISABLE_CALLS_INTO_MODULE_DO_NOT_USE_OR_YOU_WILL_BE_FIRED;
     if (Platform.OS === 'ios') {
       invariant(nativeModule, 'Native module cannot be null.');
       this._nativeModule = nativeModule;
@@ -58,7 +44,7 @@ export default class NativeEventEmitter<
     listener: (...$ElementType<EventDefinitions, K>) => mixed,
     context: $FlowFixMe,
   ): EmitterSubscription<EventDefinitions, K> {
-    if (this._nativeModule != null && !this._disableCallsIntoModule) {
+    if (this._nativeModule != null) {
       this._nativeModule.addListener(eventType);
     }
     return super.addListener(eventType, listener, context);
@@ -67,7 +53,7 @@ export default class NativeEventEmitter<
   removeAllListeners<K: $Keys<EventDefinitions>>(eventType: ?K): void {
     invariant(eventType, 'eventType argument is required.');
     const count = this.listenerCount(eventType);
-    if (this._nativeModule != null && !this._disableCallsIntoModule) {
+    if (this._nativeModule != null) {
       this._nativeModule.removeListeners(count);
     }
     super.removeAllListeners(eventType);
@@ -76,7 +62,7 @@ export default class NativeEventEmitter<
   removeSubscription<K: $Keys<EventDefinitions>>(
     subscription: EmitterSubscription<EventDefinitions, K>,
   ): void {
-    if (this._nativeModule != null && !this._disableCallsIntoModule) {
+    if (this._nativeModule != null) {
       this._nativeModule.removeListeners(1);
     }
     super.removeSubscription(subscription);