Also doesn't share anything with other TS CI users (#116)

So make it its own thing

Author: skeet70

.github/typescript-ci-patch.yaml

@@ -1,7 +1,3 @@
-# DO NOT EDIT THIS FILE.
-# Instead, edit the jsonpatch file (actually YAML) in .github/typescript-ci-patch.yaml
-# For docs, see github-actions in the IronCoreLabs/depot repo.
-
 name: TypeScript CI
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}