Remove unnecessary `icon` field from snapcraft.yaml (#25200)

This is handled in `script/snap-build` by populating `snap/gui` with
`zed.png` and `zed.desktop`

Release Notes:

- N/A
d10430b860Michael Sloan committed on 2/19/2025, 10:47:46 PM· committed by GitHubparentd0899e6
1 file changedLine totals unavailable