Remove unnecessary whitespace and an unused header

objective-c/helloworld/HelloWorld.xcodeproj/project.pbxproj

@@ -22,7 +22,6 @@
 		5E3690651B2A23800040F884 /* main.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = main.m; sourceTree = "<group>"; };
 		5E3690671B2A23800040F884 /* AppDelegate.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = AppDelegate.h; sourceTree = "<group>"; };
 		5E3690681B2A23800040F884 /* AppDelegate.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = AppDelegate.m; sourceTree = "<group>"; };
-		5E36906A1B2A23800040F884 /* ViewController.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = ViewController.h; sourceTree = "<group>"; };
 		5E36906B1B2A23800040F884 /* ViewController.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = ViewController.m; sourceTree = "<group>"; };
 		5E36906E1B2A23800040F884 /* Base */ = {isa = PBXFileReference; lastKnownFileType = file.storyboard; name = Base; path = Base.lproj/Main.storyboard; sourceTree = "<group>"; };
 		5E3690701B2A23800040F884 /* Images.xcassets */ = {isa = PBXFileReference; lastKnownFileType = folder.assetcatalog; path = Images.xcassets; sourceTree = "<group>"; };
@@ -75,7 +74,6 @@
 				5E3690701B2A23800040F884 /* Images.xcassets */,
 				5E36906D1B2A23800040F884 /* Main.storyboard */,
 				5E36906B1B2A23800040F884 /* ViewController.m */,
-				5E36906A1B2A23800040F884 /* ViewController.h */,
 				5E3690681B2A23800040F884 /* AppDelegate.m */,
 				5E3690671B2A23800040F884 /* AppDelegate.h */,
 				5E3690641B2A23800040F884 /* Info.plist */,

objective-c/helloworld/HelloWorld/AppDelegate.h

@@ -34,8 +34,5 @@
 #import <UIKit/UIKit.h>
 
 @interface AppDelegate : UIResponder <UIApplicationDelegate>
-
 @property (strong, nonatomic) UIWindow *window;
-
 @end
-

objective-c/helloworld/HelloWorld/AppDelegate.m

@@ -34,5 +34,4 @@
 #import "AppDelegate.h"
 
 @implementation AppDelegate
-
 @end

objective-c/helloworld/HelloWorld/ViewController.h

@@ -1,40 +0,0 @@
-/*
- *
- * Copyright 2015, Google Inc.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- *     * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- *     * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
-
-#import <UIKit/UIKit.h>
-
-@interface ViewController : UIViewController
-
-
-@end
-

objective-c/helloworld/HelloWorld/ViewController.m

@@ -31,8 +31,10 @@
  *
  */
 
-#import "ViewController.h"
+#import <UIKit/UIKit.h>
 
-@implementation ViewController
+@interface ViewController : UIViewController
+@end
 
+@implementation ViewController
 @end