vesting is displayed twice in the gaiad tx help screen

[alessio]

Summary of Bug

The vesting subcommand is displayed twice in the helpscreen of the gaiad tx command. An example follows:

alessio@phoenix:~/work/gaia$ gaiad tx --help
Transactions subcommands

Usage:
  gaiad tx [flags]
  gaiad tx [command]

Available Commands:
              
              
  bank                Bank transaction subcommands
  broadcast           Broadcast transactions generated offline
  crisis              Crisis transactions subcommands
  decode              Decode an binary encoded transaction string.
  distribution        Distribution transactions subcommands
  encode              Encode transactions generated offline
  evidence            Evidence transaction subcommands
  gov                 Governance transactions subcommands
  ibc                 IBC transaction subcommands
  ibc-transfer        IBC fungible token transfer transaction subcommands
  multisign           Generate multisig signatures for transactions generated offline
  sign                Sign a transaction generated offline
  sign-batch          Sign transaction batch files
  slashing            Slashing transaction subcommands
  staking             Staking transaction subcommands
  validate-signatures Validate transactions signatures
  vesting             Vesting transaction subcommands
  vesting             Vesting transaction subcommand

[SNIP]

Version

v4.0.6

Steps to Reproduce

gaiad tx --help

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