fix: remove tendermint rollback cmd

[rootulp]

Closes #1260

Testing

Only one rollback command in help output

$ celestia-appd --help
Start celestia app

Usage:
  celestia-appd [command]

Available Commands:
  add-genesis-account Add a genesis account to genesis.json
  collect-gentxs      Collect genesis txs and output a genesis.json file
  config              Create or query an application CLI configuration file
  debug               Tool for helping with debugging your application
  export              Export state to JSON
  gentx               Generate a genesis tx carrying a self delegation
  help                Help about any command
  init                Initialize private validator, p2p, genesis, and application configuration files
  keys                Manage your application's keys
  migrate             Migrate genesis to a specified target version
  query               Querying subcommands
  rollback            rollback cosmos-sdk and tendermint state by one height

[cmwaters]

Nice Find

[rootulp]

https://github.com/celestiaorg/celestia-app/actions/runs/3953018012/jobs/6768818599#step:6:158 looks like a flake so merging this.