[eas-cli] Remove commented-out code in eas update command

[wschurman]

Why

This was temporarily removed in #3182. No discussion has occurred and none are planned so just removing the code for now since it's likely stale. If and when discussion happens we can just reference this PR to add it back in.

How

Remove code.

Test Plan

yarn tsc

[github-actions]

❌ It looks like a changelog entry is missing for this PR. Add it manually to CHANGELOG.md.
⏩ If this PR doesn't require a changelog entry, such as if it's an internal change that doesn't affect the user experience, you can add the "no changelog" label to the PR.

[wschurman]

• [eas-cli] Add eas preview:go command #3345
• [eas-cli] Remove commented-out code in eas update command #3344 👈 (View in Graphite)
• main

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[github-actions]

Subscribed to pull request

File Patterns	Mentions
**/*	@douglowder
packages/eas-cli/src/commands/update/**	@quinlanj

Generated by CodeMention

[github-actions]

Size Change: +406 B (0%)

Total Size: 53.2 MB

Filename	Size	Change
./packages/eas-cli/dist/eas-linux-x64.tar.gz	53.2 MB	+406 B (0%)

_{compressed-size-action}

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 49.67%. Comparing base (1c31702) to head (2915606).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3344   +/-   ##
=======================================
  Coverage   49.67%   49.67%           
=======================================
  Files         671      671           
  Lines       28018    28018           
  Branches     5802     5802           
=======================================
  Hits        13914    13914           
  Misses      12916    12916           
  Partials     1188     1188           

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