Remove unnecessary generic type arguments

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=175155365

java/google/registry/rde/imports/RdeImportUtils.java

@@ -98,7 +98,7 @@ public class RdeImportUtils {
         resource.getClass().getCanonicalName(),
         resource.getForeignKey(),
         resource.getRepoId());
-    return ImmutableSet.<Object>of(ForeignKeyIndex.create(resource, resource.getDeletionTime()),
+    return ImmutableSet.of(ForeignKeyIndex.create(resource, resource.getDeletionTime()),
         EppResourceIndex.create(Key.create(resource)));
   }
 

java/google/registry/rde/imports/XjcToDomainResourceConverter.java

@@ -191,7 +191,7 @@ final class XjcToDomainResourceConverter extends XjcToEppResourceConverter {
                     .collect(toImmutableSet()))
             .setDsData(
                 domain.getSecDNS() == null
-                    ? ImmutableSet.<DelegationSignerData>of()
+                    ? ImmutableSet.of()
                     : domain
                         .getSecDNS()
                         .getDsDatas()