(ios) Fix iOS 13 show not working

Removed tmpWindow and controller.
This was introduced to fix IAB with WKWebView before WKIAB existed.

Author: NiklasMerz

src/ios/CDVWKInAppBrowser.h

@@ -27,8 +27,6 @@
 @class CDVWKInAppBrowserViewController;
 
 @interface CDVWKInAppBrowser : CDVPlugin {
-    UIWindow * tmpWindow;
-
     @private
     NSString* _beforeload;
     BOOL _waitForBeforeload;

src/ios/CDVWKInAppBrowser.m

@@ -275,7 +275,9 @@ - (void)openInInAppBrowser:(NSURL*)url withOptions:(NSString*)options
     _waitForBeforeload = ![_beforeload isEqualToString:@""];
 
     [self.inAppBrowserViewController navigateTo:url];
-    [self show:nil withNoAnimate:browserOptions.hidden];
+    if (!browserOptions.hidden) {
+        [self show:nil withNoAnimate:browserOptions.hidden];
+    }
 }
 
 - (void)show:(CDVInvokedUrlCommand*)command{
@@ -312,25 +314,7 @@ - (void)show:(CDVInvokedUrlCommand*)command withNoAnimate:(BOOL)noAnimate
 
     // Run later to avoid the "took a long time" log message.
     dispatch_async(dispatch_get_main_queue(), ^{
-        if (weakSelf.inAppBrowserViewController != nil) {
-            float osVersion = [[[UIDevice currentDevice] systemVersion] floatValue];
-            if (!self->tmpWindow) {
-                CGRect frame = [[UIScreen mainScreen] bounds];
-                if(initHidden && osVersion < 11){
-                   frame.origin.x = -10000;
-                }
-                self->tmpWindow = [[UIWindow alloc] initWithFrame:frame];
-            }
-            UIViewController *tmpController = [[UIViewController alloc] init];
-
-            [self->tmpWindow setRootViewController:tmpController];
-            [self->tmpWindow setWindowLevel:UIWindowLevelNormal];
-
-            if(!initHidden || osVersion < 11){
-                [self->tmpWindow makeKeyAndVisible];
-            }
-            [tmpController presentViewController:nav animated:!noAnimate completion:nil];
-        }
+        [weakSelf.viewController presentViewController:nav animated:!noAnimate completion:nil];
     });
 }