remove duplicated service tag

Signed-off-by: Jonas Mayer <jonas.a.mayer@gmx.net>

app/src/main/AndroidManifest.xml

@@ -239,12 +239,6 @@
             android:exported="false"
             android:configChanges="orientation|screenLayout|screenSize|keyboardHidden"
             android:theme="@style/Theme.ownCloud.Media" />
-        <service
-            android:name="androidx.work.impl.foreground.SystemForegroundService"
-            android:directBootAware="false"
-            android:enabled="@bool/enable_system_foreground_service_default"
-            android:exported="false"
-            android:foregroundServiceType="dataSync" />
         <service
             android:name=".authentication.AccountAuthenticatorService"
             android:exported="false">