More iOS cleanup

Remove outdated code.

ios/ViewController.mm

@@ -47,17 +47,12 @@ PPSSPPBaseViewController *sharedViewController;
 
 @interface PPSSPPViewControllerGL () {
 	GraphicsContext *graphicsContext;
-
-	int imageRequestId;
-	NSString *imageFilename;
 }
 
 @property (nonatomic, strong) EAGLContext *glContext;
 @property (nonatomic, strong) GLKView *glView;
 @property (nonatomic, strong) CADisplayLink *displayLink;
 
-@property (nonatomic, strong) EAGLContext* context;
-
 @end
 
 @implementation PPSSPPViewControllerGL {}
@@ -156,7 +151,6 @@ PPSSPPBaseViewController *sharedViewController;
 
 	[self hideKeyboard];
 
-	// Initialize the motion manager for accelerometer control.
 	INFO_LOG(Log::G3D, "Done with viewDidLoad.");
 }
 
@@ -247,15 +241,6 @@ PPSSPPBaseViewController *sharedViewController;
 
 	_dbg_assert_(graphicsContext);
 
-	if (self.context) {
-		if ([EAGLContext currentContext] == self.context) {
-			[EAGLContext setCurrentContext:nil];
-		}
-		self.context = nil;
-	}
-
-	[[NSNotificationCenter defaultCenter] removeObserver:self];
-
 	graphicsContext->ShutdownSurface();
 	graphicsContext->ShutdownAPI();
 	delete graphicsContext;

ios/ViewControllerCommon.mm

@@ -142,7 +142,7 @@ static int GetPickerRequestId(id picker) {
 	// This needs to be called really late during startup, unfortunately.
 #if PPSSPP_PLATFORM(IOS_APP_STORE)
 	[IAPManager sharedIAPManager];  // Kick off the IAPManager early.
-	NSLog(@"Metal viewDidAppear. updating icon");
+	NSLog(@"viewDidAppear. updating icon");
 	dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(4.0 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
 		[[IAPManager sharedIAPManager] updateIcon:false];
 		[self hideKeyboard];
@@ -526,9 +526,9 @@ extern float g_safeInsetBottom;
 }
 
 - (void)updateResolutionWithView:(UIView *)view {
-	// 1. Get the scale from the window scene (safest for Metal)
+	// 1. Get the scale from the window scene
 	CGFloat scale = 1.0;
-	if (view.window.windowScene) {
+	if (view.window && view.window.windowScene) {
 		scale = view.window.windowScene.screen.nativeScale;
 	} else {
 		scale = [UITraitCollection currentTraitCollection].displayScale;