Remove RecursiveGroup test case which doesn't exist in 25.x pre-Editions

Author: zhangskz

java/lite/src/test/java/com/google/protobuf/LiteTest.java

@@ -17,7 +17,6 @@
 import com.google.protobuf.UnittestImportPublicLite.PublicImportMessageLite;
 import com.google.protobuf.UnittestLite.ForeignEnumLite;
 import com.google.protobuf.UnittestLite.ForeignMessageLite;
-import com.google.protobuf.UnittestLite.RecursiveGroup;
 import com.google.protobuf.UnittestLite.RecursiveMessage;
 import com.google.protobuf.UnittestLite.TestAllExtensionsLite;
 import com.google.protobuf.UnittestLite.TestAllTypesLite;
@@ -2614,17 +2613,6 @@ public void testParseFromBytes_recursiveMessages() throws Exception {
     assertThat(thrown).hasMessageThat().contains("Protocol message had too many levels of nesting");
   }
 
-  @Test
-  public void testParseFromBytes_recursiveKnownGroups() throws Exception {
-    byte[] data99 = makeRecursiveGroup(99).toByteArray();
-    byte[] data100 = makeRecursiveGroup(100).toByteArray();
-
-    RecursiveGroup unused = RecursiveGroup.parseFrom(data99);
-    Throwable thrown =
-        assertThrows(InvalidProtocolBufferException.class, () -> RecursiveGroup.parseFrom(data100));
-    assertThat(thrown).hasMessageThat().contains("Protocol message had too many levels of nesting");
-  }
-
   @Test
   @SuppressWarnings("ProtoParseFromByteString")
   public void testMaliciousSGroupTagsWithMapField_fromByteArray() throws Exception {
@@ -3043,12 +3031,4 @@ private static RecursiveMessage makeRecursiveMessage(int num) {
       return RecursiveMessage.newBuilder().setRecurse(makeRecursiveMessage(num - 1)).build();
     }
   }
-
-  private static RecursiveGroup makeRecursiveGroup(int num) {
-    if (num == 0) {
-      return RecursiveGroup.getDefaultInstance();
-    } else {
-      return RecursiveGroup.newBuilder().setRecurse(makeRecursiveGroup(num - 1)).build();
-    }
-  }
 }

src/google/protobuf/unittest_lite.proto

@@ -506,7 +506,3 @@ message RecursiveMessage {
   optional RecursiveMessage recurse = 1;
   optional bytes payload = 2;
 }
-
-message RecursiveGroup {
-  optional RecursiveGroup recurse = 1 [features.message_encoding = DELIMITED];
-}