remove unused WPWalkthroughOverlayView

Author: iamgabrielma

WooCommerce/WooCommerce.xcodeproj/project.pbxproj

@@ -5730,7 +5730,6 @@
 				"NSURL+IDN/NSURL+IDN.h",
 				NUX/WPNUXMainButton.h,
 				NUX/WPNUXSecondaryButton.h,
-				NUX/WPWalkthroughOverlayView.h,
 				NUX/WPWalkthroughTextField.h,
 				Services/LoginFacade.h,
 				Services/WordPressXMLRPCAPIFacade.h,

WooCommerce/WordPressAuthenticator/NUX/WPWalkthroughOverlayView.h

@@ -16,7 +16,6 @@ FOUNDATION_EXPORT const unsigned char WordPressAuthenticatorVersionString[];
 #import <WordPressAuthenticator/WPAuthenticatorLogging.h>
 #import <WordPressAuthenticator/WPNUXMainButton.h>
 #import <WordPressAuthenticator/WPNUXSecondaryButton.h>
-#import <WordPressAuthenticator/WPWalkthroughOverlayView.h>
 #import <WordPressAuthenticator/WPWalkthroughTextField.h>
 
 // From what was once WordPressAuthenticator