Merge #6778: backport: Merge bitcoin#23751: build, qt: No need to set inapplicable QPA backend for Android

9380840 Merge bitcoin#23751: build, qt: No need to set inapplicable QPA backend for Android (fanquake)

Pull request description:

  Backports bitcoin#23751

  Original commit: 7097a63

  Backported from Bitcoin Core v0.24

  ## Changes Applied
  - Removed `-qpa xcb` from Android Qt configuration in depends/packages/qt.mk
  - The Java file changes were not applicable as Dash has already removed Android Java source files (only .gitignore remains in src/qt/android/)

  ## Note
  This is a partial backport as Dash appears to have removed Android support files while still maintaining Android build configuration in the depends system.

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Tree-SHA512: 180fcddf1af8a08d715f6f17b4e212ee899f21ebc57e7e8bb0cea3a05c6f5ac4ebe743f96bdb1c2055e224e8a2f4da38749ef847491514759059640529b868db

Author: PastaPastaPasta

depends/packages/qt.mk

@@ -193,7 +193,6 @@ $(package)_config_opts_android += -android-sdk $(ANDROID_SDK)
 $(package)_config_opts_android += -android-ndk $(ANDROID_NDK)
 $(package)_config_opts_android += -android-ndk-platform android-$(ANDROID_API_LEVEL)
 $(package)_config_opts_android += -egl
-$(package)_config_opts_android += -qpa xcb
 $(package)_config_opts_android += -no-dbus
 $(package)_config_opts_android += -opengl es2
 $(package)_config_opts_android += -qt-freetype