Remove unnecessary type specifications

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=179585680

javatests/google/registry/tools/PublishDetailReportCommandTest.java

@@ -36,7 +36,7 @@ public class PublishDetailReportCommandTest extends CommandTestCase<PublishDetai
   public void init() throws Exception {
     command.setConnection(connection);
     when(connection.sendJson(anyString(), anyMapOf(String.class, Object.class)))
-        .thenReturn(ImmutableMap.<String, Object>of("driveId", "some123id"));
+        .thenReturn(ImmutableMap.of("driveId", "some123id"));
   }
 
   @Test