Analysis: Suppress system ui deprecated warnings for wordpress source

Warning Messages:
- "'setter for systemUiVisibility: Int' is deprecated.
Deprecated in Java"
- "'getter for systemUiVisibility: Int' is deprecated.
Deprecated in Java"
- "'SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN: Int' is deprecated.
Deprecated in Java"
- "'SYSTEM_UI_FLAG_LAYOUT_STABLE: Int' is deprecated.
Deprecated in Java"

These deprecated warnings are suppressed, that is, instead of being
resolved, since a resolution would require a proper migration.

For more info see:
- android.view.View.setSystemUiVisibility (Docs):
https://developer.android.com/reference/android/view/
View#setSystemUiVisibility(int)
- android.view.View.getSystemUiVisibility (Docs):
https://developer.android.com/reference/android/view/
View#getSystemUiVisibility()

Author: ParaskP7

WordPress/src/wordpress/java/org/wordpress/android/ui/accounts/login/LoginPrologueFragment.kt

@@ -38,6 +38,7 @@ class LoginPrologueFragment : Fragment(R.layout.login_signup_screen) {
         loginPrologueListener = context
     }
 
+    @Suppress("DEPRECATION")
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)