Remove unnecessary generic type arguments

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

java/google/registry/model/poll/PollMessageExternalKeyConverter.java

@@ -51,7 +51,7 @@ public class PollMessageExternalKeyConverter extends Converter<Key<PollMessage>,
    * belongs to.
    */
   public static final ImmutableBiMap<Class<? extends EppResource>, Long> EXTERNAL_KEY_CLASS_ID_MAP =
-      ImmutableBiMap.<Class<? extends EppResource>, Long>of(
+      ImmutableBiMap.of(
           DomainBase.class, 1L,
           ContactResource.class, 2L,
           HostResource.class, 3L);