AppImage: Remove unused PyQt5 modules

We already delete unused Qt modules, but we weren't deleting their PyQt5 modules.

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taken from Electron-Cash/Electron-Cash@e044c94677160b6e6bb1a981b22a4b85103de6cb

contrib/build-linux/appimage/build.sh

@@ -180,13 +180,10 @@ rm -rf "$APPDIR"/usr/lib/python3.6/config-3.6m-x86_64-linux-gnu
 rm -rf "$APPDIR"/usr/lib/python3.6/site-packages/PyQt5/Qt/translations/qtwebengine_locales
 rm -rf "$APPDIR"/usr/lib/python3.6/site-packages/PyQt5/Qt/resources/qtwebengine_*
 rm -rf "$APPDIR"/usr/lib/python3.6/site-packages/PyQt5/Qt/qml
-rm -rf "$APPDIR"/usr/lib/python3.6/site-packages/PyQt5/Qt/lib/libQt5Web*
-rm -rf "$APPDIR"/usr/lib/python3.6/site-packages/PyQt5/Qt/lib/libQt5Designer*
-rm -rf "$APPDIR"/usr/lib/python3.6/site-packages/PyQt5/Qt/lib/libQt5Qml*
-rm -rf "$APPDIR"/usr/lib/python3.6/site-packages/PyQt5/Qt/lib/libQt5Quick*
-rm -rf "$APPDIR"/usr/lib/python3.6/site-packages/PyQt5/Qt/lib/libQt5Location*
-rm -rf "$APPDIR"/usr/lib/python3.6/site-packages/PyQt5/Qt/lib/libQt5Test*
-rm -rf "$APPDIR"/usr/lib/python3.6/site-packages/PyQt5/Qt/lib/libQt5Xml*
+for component in Web Designer Qml Quick Location Test Xml ; do
+    rm -rf "$APPDIR"/usr/lib/python3.6/site-packages/PyQt5/Qt/lib/libQt5${component}*
+    rm -rf "$APPDIR"/usr/lib/python3.6/site-packages/PyQt5/Qt${component}*
+done
 rm -rf "$APPDIR"/usr/lib/python3.6/site-packages/PyQt5/Qt.so