fix: delete use-template.yml instead of non-existent create.yml

[BhariGowda]

The cleanup step in use-template.yml attempts to remove itself with:

rm -f "./.github/workflows/create.yml"

But the file is named use-template.yml, not create.yml. That rm silently does nothing create.yml has never existed in this repo.

As a result, every project generated from this template inherits use-template.yml permanently. It then re-runs on every push to main of the user's project forever, burning CI minutes on a no-op.

Fix: change the filename to match the actual file.

Verified with:

find . -name "create.yml"  # returns nothing

[PaulRBerg]

Thanks