Remove Qt5::Xml dependency

Dockerfile

@@ -8,7 +8,7 @@ run zypper --non-interactive --gpg-auto-import-keys install \
     glibc-devel glib2-devel glib2-tools dbus-1-devel alsa-devel libpulse-devel libnotify-devel \
     boost-devel protobuf-devel sqlite3-devel taglib-devel \
     gstreamer-devel gstreamer-plugins-base-devel libxine-devel vlc-devel \
-    libQt5Core-devel libQt5Gui-devel libQt5Widgets-devel libQt5Concurrent-devel libQt5Network-devel libQt5Sql-devel libQt5Xml-devel \
+    libQt5Core-devel libQt5Gui-devel libQt5Widgets-devel libQt5Concurrent-devel libQt5Network-devel libQt5Sql-devel \
     libQt5DBus-devel libqt5-qtx11extras-devel libQt5Gui-private-headers-devel libqt5-qtbase-common-devel \
     libcdio-devel libgpod-devel libplist-devel libmtp-devel libusbmuxd-devel libchromaprint-devel