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.touchwand/src/main/java/org/openhab/binding/touchwand/internal/discovery/TouchWandControllerDiscoveryService.java

@@ -70,7 +70,7 @@ public class TouchWandControllerDiscoveryService extends AbstractDiscoveryServic
     }
 
     @Override
-    public void activate(@Nullable Map<String, @Nullable Object> configProperties) {
+    public void activate(@Nullable Map<String, Object> configProperties) {
         removeOlderResults(getTimestampOfLastScan());
         super.activate(configProperties);
     }