fix: removed broken LLVM clone step from release workflow

Since the workflow already uses 'actions/checkout@v4' with
'submodules: true', the LLVM submodule is automatically checked out
at the pinned commit, making the separate clone step unnecessary
and broken.

Signed-off-by: 0xf333 <[email protected]>

Author: 0xf333

.github/workflows/release-llvm.yml

@@ -98,10 +98,6 @@ jobs:
         run: |
           cargo install --locked --force --path crates/llvm-builder
 
-      - name: Clone LLVM
-        run: |
-          revive-llvm --target-env ${{ matrix.builder-arg }} clone
-
       - name: Build LLVM
         if: ${{ matrix.target != 'wasm32-unknown-emscripten' }}
         run: |