remove an obsolete comment, there is no sensible name for a grant, see the spec instead

Author: ThoSap

operator/src/main/java/it/aboutbits/postgresql/crd/grant/Grant.java

@@ -44,6 +44,6 @@ public class Grant
     @Override
     @JsonIgnore
     public String getName() {
-        return ""; // Come up with something that makes sense
+        return "";
     }
 }