docs: remove methods from CLI tutorial that do not work currently

[jcstein]

Overview

Resolves #914

Checklist

• New and updated code has appropriate documentation
• New and updated code has new and/or updated testing
• Required CI checks are passing
• Visual proof for any user facing features like CLI or documentation updates
• Linked issues closed with keywords

[github-actions]

PR Preview Action v1.4.4
🚀 Deployed preview to https://celestiaorg.github.io/docs/pr-preview/pr-915/
on branch gh-pages at 2023-07-19 10:14 UTC

[jcstein]

cc @vgonkivs - i think i will just add back GetSharesByNamespace once it is in a live version :) and i recall @renaynay recommended to take out GetShares for now, and maybe for good :)

celestia rpc share GetSharesByNamespace "$(celestia rpc header GetByHeight 103692 | jq '.result.dah' -r)" 0x42690c204d39600fddd3
{
  "jsonrpc": "2.0",
  "result": [
    {
      "Shares": [
        "AAAAAAAAAAAAAAAAAAAAAAAAAEJpDCBNOWAP3dMBAAAACEltZHRJZz09AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA="
      ],
      "Proof": {
        "start": 1,
        "end": 2,
        "nodes": [
          "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABHBoPeolnLUCIgDXv2uScYcpg3V/gJIIwil8j33b33eH",
          "/////////////////////////////////////////////////////////////////////////////4S2andMgMf77TuFT8NmQm5qoIqmmDsUmUHKwGCZ+wg0"
        ],
        "leaf_hash": null,
        "is_max_namespace_id_ignored": true
      }
    }
  ],
  "id": 1
}