fix: drop the dangling skills gitlink that made the repo unbuildable

`skills` was committed as a gitlink (mode 160000, a0665829) but the repo has
no .gitmodules, so the entry has no URL. Any checkout that initialises
submodules dies on it:

  fatal: No url found for submodule path 'skills' in .gitmodules

BuildKit's git source always updates submodules, so this failed EVERY
platform-native build of this repo before it could even read the Dockerfile.
That is why the deployed bootnode-web image still dates from June while main
moved on.

The path is an empty directory with no upstream recorded anywhere, so the
gitlink points at nothing recoverable — removing the index entry is the whole
fix. If a skills submodule is wanted later it needs a real .gitmodules URL.
This commit is contained in:
2026-07-26 10:23:52 -07:00
parent c289ba602c
commit b53533db53
Submodule skills deleted from a066582936