remove unused java imports

Signed-off-by: Andy Scherzinger <info@andy-scherzinger.de>

app/src/main/java/com/nextcloud/talk/jobs/WebsocketConnectionsWorker.java

@@ -26,7 +26,6 @@ import android.text.TextUtils;
 
 import com.nextcloud.talk.application.NextcloudTalkApplication;
 import com.nextcloud.talk.data.user.model.User;
-import com.nextcloud.talk.models.ExternalSignalingServer;
 import com.nextcloud.talk.users.UserManager;
 import com.nextcloud.talk.webrtc.WebSocketConnectionHelper;
 

app/src/main/java/com/nextcloud/talk/webrtc/MagicProximitySensor.java

@@ -36,8 +36,8 @@ import android.hardware.Sensor;
 import android.hardware.SensorEvent;
 import android.hardware.SensorEventListener;
 import android.hardware.SensorManager;
-import android.os.Build;
 import android.util.Log;
+
 import org.webrtc.ThreadUtils;
 
 /**