[llvm] workflows/release-binaries: Stop using ccache (PR #124415)

[Aiden Grossman via llvm-commits]

https://github.com/boomanaiden154 approved this pull request.

Removing seems reasonable enough to me, but I'm also pretty sure this isn't a super fruitful attack vector given how PRs from forks I'm pretty sure push caches into the context of the fork.

Completely closing off the avenue is not a bid idea though.

https://github.com/llvm/llvm-project/pull/124415