Fix clippy workflow cache cleanup

Remove pnpm cache handling from the Clippy workflow's setup-node\nstep. The job does not install Node dependencies, so the post-job\ncache save was failing even when clippy itself passed.

Author: andreivcodes

.github/workflows/clippy.yml

@@ -40,7 +40,6 @@ jobs:
       - uses: actions/setup-node@v4
         with:
           node-version: 22
-          cache: pnpm
 
       - uses: dtolnay/rust-toolchain@stable
         with: