Remove Map null annotation workarounds (#8916)

These workarounds to prevent false positives can be removed now the EEAs allow for proper null analysis.

Signed-off-by: Wouter Born <github@maindrain.net>

bundles/org.openhab.binding.leapmotion/src/main/java/org/openhab/binding/leapmotion/internal/discovery/LeapMotionDiscoveryService.java

@@ -46,7 +46,7 @@ public class LeapMotionDiscoveryService extends AbstractDiscoveryService {
     }
 
     @Override
-    protected void activate(@Nullable Map<String, @Nullable Object> configProperties) {
+    protected void activate(@Nullable Map<String, Object> configProperties) {
         leapController = new Controller();
         listener = new Listener() {
             @Override