Remove deprecated --Xmerge-support option (#4518)

* Remove deprecated --XMerge-support option

Signed-off-by: Fabio Di Fabio <fabio.difabio@consensys.net>

* Update CHANGELOG

Signed-off-by: Fabio Di Fabio <fabio.difabio@consensys.net>

Signed-off-by: Fabio Di Fabio <fabio.difabio@consensys.net>
Co-authored-by: Sally MacFarlane <macfarla.github@gmail.com>

CHANGELOG.md

@@ -5,7 +5,8 @@
 - Flexible Privacy Groups (early access) support to Tessera's EC encryptor (contracts modified) [#4282](https://github.com/hyperledger/besu/pull/4282)
   * Before this change, the `bytes32` type was used for the enclave public keys, just supporting encryptors with public keys of that length (like the default NaCl)
   * For the EC encryptor, the encoded public key length is 91
-- `--tx-pool-hashes-max-size` option removed (deprecated in 22.1.3).
+- `--tx-pool-hashes-max-size` option removed (deprecated in 22.1.3)
+- `--Xmerge-support` option remove (deprecated in 22.4.2) [#4518](https://github.com/hyperledger/besu/pull/4518)
 
 ### Additions and Improvements
 - Improved RLP processing of zero-length string as 0x80 [#4283](https://github.com/hyperledger/besu/pull/4283) [#4388](https://github.com/hyperledger/besu/issues/4388)

besu/src/main/java/org/hyperledger/besu/cli/BesuCommand.java

@@ -59,7 +59,6 @@
 import org.hyperledger.besu.cli.options.unstable.EvmOptions;
 import org.hyperledger.besu.cli.options.unstable.IpcOptions;
 import org.hyperledger.besu.cli.options.unstable.LauncherOptions;
-import org.hyperledger.besu.cli.options.unstable.MergeOptions;
 import org.hyperledger.besu.cli.options.unstable.MetricsCLIOptions;
 import org.hyperledger.besu.cli.options.unstable.MiningOptions;
 import org.hyperledger.besu.cli.options.unstable.NatOptions;
@@ -282,7 +281,6 @@ public class BesuCommand implements DefaultCommandValues, Runnable {
   private final NatOptions unstableNatOptions = NatOptions.create();
   private final NativeLibraryOptions unstableNativeLibraryOptions = NativeLibraryOptions.create();
   private final RPCOptions unstableRPCOptions = RPCOptions.create();
-  private final MergeOptions mergeOptions = MergeOptions.create();
   final LauncherOptions unstableLauncherOptions = LauncherOptions.create();
   private final PrivacyPluginOptions unstablePrivacyPluginOptions = PrivacyPluginOptions.create();
   private final EvmOptions unstableEvmOptions = EvmOptions.create();
@@ -1521,7 +1519,6 @@ private void handleUnstableOptions() {
             .put("Mining", unstableMiningOptions)
             .put("Native Library", unstableNativeLibraryOptions)
             .put("Launcher", unstableLauncherOptions)
-            .put("Merge", mergeOptions)
             .put("EVM Options", unstableEvmOptions)
             .put("IPC Options", unstableIpcOptions)
             .build();