Save the RDAP request time globally instead of passing it around

Also removed the rdapWhoisServer value, as it's just null and will likely stay that way (it isn't mentioned in the RDAP response profile)

If it'll ever become required, we can add it back.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=247643981

java/google/registry/rdap/RdapEntityAction.java

@@ -33,7 +33,6 @@ import google.registry.request.HttpException.NotFoundException;
 import google.registry.request.auth.Auth;
 import java.util.Optional;
 import javax.inject.Inject;
-import org.joda.time.DateTime;
 
 /**
  * RDAP (new WHOIS) action for entity (contact and registrar) requests. the ICANN operational
@@ -62,7 +61,6 @@ public class RdapEntityAction extends RdapActionBase {
   @Override
   public RdapEntity getJsonObjectForResource(
       String pathSearchString, boolean isHeadRequest) {
-    DateTime now = clock.nowUtc();
     // The query string is not used; the RDAP syntax is /rdap/entity/handle (the handle is the roid
     // for contacts and the client identifier for registrars). Since RDAP's concept of an entity
     // includes both contacts and registrars, search for one first, then the other.
@@ -73,12 +71,10 @@ public class RdapEntityAction extends RdapActionBase {
       ContactResource contactResource = ofy().load().key(contactKey).now();
       // As per Andy Newton on the regext mailing list, contacts by themselves have no role, since
       // they are global, and might have different roles for different domains.
-      if ((contactResource != null) && shouldBeVisible(contactResource, now)) {
+      if ((contactResource != null) && shouldBeVisible(contactResource)) {
         return rdapJsonFormatter.makeRdapJsonForContact(
             contactResource,
             Optional.empty(),
-            rdapWhoisServer,
-            now,
             OutputDataType.FULL);
       }
     }
@@ -88,7 +84,7 @@ public class RdapEntityAction extends RdapActionBase {
       Optional<Registrar> registrar = getRegistrarByIanaIdentifier(ianaIdentifier);
       if (registrar.isPresent() && shouldBeVisible(registrar.get())) {
         return rdapJsonFormatter.makeRdapJsonForRegistrar(
-            registrar.get(), rdapWhoisServer, now, OutputDataType.FULL);
+            registrar.get(), OutputDataType.FULL);
       }
     }
     // At this point, we have failed to find either a contact or a registrar.