remove label api

wise-webapp/src/main/java/com/wisemapping/dao/LabelManager.java

@@ -21,4 +21,6 @@ public interface LabelManager {
 
     @Nullable
     Label getLabelByTitle(@NotNull final String title, @NotNull final User user);
+
+    void removeLabel(@NotNull final Label label);
 }

wise-webapp/src/main/java/com/wisemapping/dao/LabelManagerImpl.java

@@ -44,5 +44,10 @@ public class LabelManagerImpl extends HibernateDaoSupport
         return result;
     }
 
+    @Override
+    public void removeLabel(@NotNull Label label) {
+        getHibernateTemplate().delete(label);
+    }
+
 
 }