Remove FB copyright notices from iOS template (facebook#27725)

Summary:
Files that are to be part of the user’s project shouldn’t have FB copyright notices.

There’s [one notice left](https://github.com/facebook/react-native/blob/66601e755fcad10698e61d20878d52194ad0e90c/template/android/app/src/debug/java/com/helloworld/ReactNativeFlipper.java#L2) in the `android` template, which is in a file that doesn’t seem to be intended to be changed by the user and so that seems fine to me.

[iOS] [Removed] - Remove copyright notices from iOS application template
Pull Request resolved: facebook#27725

Test Plan:
```bash
npx react-native init TestTemplateUpdates --template ~/Code/ReactNative/react-native
cd ios
xcodebuild -workspace TestTemplateUpdates.xcworkspace \
  -scheme TestTemplateUpdates \
  -destination 'platform=iOS Simulator,OS=latest,name=iPhone 8' build
[…]
** BUILD SUCCEEDED **
```

Differential Revision: D19343386

Pulled By: TheSavior

fbshipit-source-id: a78be5e5d2fdc2477adedb51d6bb3ff19845b75f

template/ios/HelloWorld.xcodeproj/project.pbxproj

@@ -241,7 +241,6 @@
 			isa = PBXProject;
 			attributes = {
 				LastUpgradeCheck = 0940;
-				ORGANIZATIONNAME = Facebook;
 				TargetAttributes = {
 					00E356ED1AD99517003FC87E = {
 						CreatedOnToolsVersion = 6.2;
@@ -550,7 +549,7 @@
 					"-ObjC",
 					"-lc++",
 				);
-				PRODUCT_BUNDLE_IDENTIFIER = "com.facebook.REACT.HelloWorld-tvOS";
+				PRODUCT_BUNDLE_IDENTIFIER = "org.reactjs.native.example.HelloWorld-tvOS";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SDKROOT = appletvos;
 				TARGETED_DEVICE_FAMILY = 3;
@@ -577,7 +576,7 @@
 					"-ObjC",
 					"-lc++",
 				);
-				PRODUCT_BUNDLE_IDENTIFIER = "com.facebook.REACT.HelloWorld-tvOS";
+				PRODUCT_BUNDLE_IDENTIFIER = "org.reactjs.native.example.HelloWorld-tvOS";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SDKROOT = appletvos;
 				TARGETED_DEVICE_FAMILY = 3;
@@ -603,7 +602,7 @@
 					"-ObjC",
 					"-lc++",
 				);
-				PRODUCT_BUNDLE_IDENTIFIER = "com.facebook.REACT.HelloWorld-tvOSTests";
+				PRODUCT_BUNDLE_IDENTIFIER = "org.reactjs.native.example.HelloWorld-tvOSTests";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SDKROOT = appletvos;
 				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/HelloWorld-tvOS.app/HelloWorld-tvOS";
@@ -629,7 +628,7 @@
 					"-ObjC",
 					"-lc++",
 				);
-				PRODUCT_BUNDLE_IDENTIFIER = "com.facebook.REACT.HelloWorld-tvOSTests";
+				PRODUCT_BUNDLE_IDENTIFIER = "org.reactjs.native.example.HelloWorld-tvOSTests";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SDKROOT = appletvos;
 				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/HelloWorld-tvOS.app/HelloWorld-tvOS";

template/ios/HelloWorld/AppDelegate.h

@@ -1,10 +1,3 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
 #import <React/RCTBridgeDelegate.h>
 #import <UIKit/UIKit.h>
 

template/ios/HelloWorld/AppDelegate.m

@@ -1,10 +1,3 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
 #import "AppDelegate.h"
 
 #import <React/RCTBridge.h>

template/ios/HelloWorld/main.m

@@ -1,10 +1,3 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
 #import <UIKit/UIKit.h>
 
 #import "AppDelegate.h"

template/ios/HelloWorldTests/HelloWorldTests.m

@@ -1,10 +1,3 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
 #import <UIKit/UIKit.h>
 #import <XCTest/XCTest.h>