Revert "Enable notifications during testcases to avoid NPE starting the service"

This reverts commit 739b5e9c50.

Might fix #666

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/util/GB.java

@@ -62,6 +62,9 @@ public class GB {
     public static final String DISPLAY_MESSAGE_SEVERITY = "severity";
 
     public static Notification createNotification(String text, boolean connected, Context context) {
+        if (GBEnvironment.env().isLocalTest()) {
+            return null;
+        }
         Intent notificationIntent = new Intent(context, ControlCenterv2.class);
         notificationIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK
                 | Intent.FLAG_ACTIVITY_CLEAR_TASK);