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.nibeuplink/src/main/java/org/openhab/binding/nibeuplink/internal/handler/UplinkBaseHandler.java

@@ -169,7 +169,7 @@ public abstract class UplinkBaseHandler extends BaseThingHandler implements Nibe
      * @param values map containing the data updates
      */
     @Override
-    public void updateChannelStatus(Map<Channel, @Nullable State> values) {
+    public void updateChannelStatus(Map<Channel, State> values) {
         logger.debug("Handling channel update. ({} Channels)", values.size());
 
         for (Channel channel : values.keySet()) {

bundles/org.openhab.binding.nibeuplink/src/main/java/org/openhab/binding/nibeuplink/internal/model/GenericDataResponse.java

@@ -33,7 +33,6 @@ import com.google.gson.annotations.SerializedName;
 public class GenericDataResponse implements DataResponse {
     private final Logger logger = LoggerFactory.getLogger(GenericDataResponse.class);
 
-    @NonNullByDefault
     public static class Value {
         @SerializedName("VariableId")
         private @Nullable String variableId;