TrackRecordingService: always starts as foreground service.

src/main/java/de/dennisguse/opentracks/publicapi/AbstractAPIActivity.java

@@ -38,7 +38,7 @@ public abstract class AbstractAPIActivity extends AppCompatActivity {
         if (PreferencesUtils.isPublicAPIenabled()) {
             Log.i(TAG, "Received and trying to execute requested action.");
             new TrackRecordingServiceConnection(serviceConnectedCallback)
-                    .startAndBind(this, isStartServiceForeground());
+                    .startAndBind(this);
         } else {
             Toast.makeText(this, getString(R.string.settings_public_api_disabled_toast), Toast.LENGTH_LONG).show();
             Log.w(TAG, "Public API is disabled; ignoring request.");
@@ -46,10 +46,6 @@ public abstract class AbstractAPIActivity extends AppCompatActivity {
         }
     }
 
-    protected boolean isStartServiceForeground() {
-        return false;
-    }
-
     protected abstract void execute(TrackRecordingService service);
 
     protected abstract boolean isPostExecuteStopService();