remove cache from deploy CI because it always breaks

.github/workflows/deploy.yml

@@ -16,28 +16,18 @@ jobs:
         run: |
           git submodule update --init test/script/reference
           git submodule update --init test/c/collections-c/files
-      - name: cache
-        id: cache-opam
-        uses: actions/cache@v4
-        env:
-          cache-name: cache-opam-deploy
-        with:
-          path: |
-            ~/work/owi/owi/_opam/
-          key: ${{ runner.os }}-deploy-${{ env.cache-name }}-${{ hashFiles('**/*.opam') }}
       - name: setup-ocaml
         uses: ocaml/setup-ocaml@v3
         with:
           ocaml-compiler: "5.2"
-          dune-cache: true
+          dune-cache: false
           opam-pin: true
           allow-prerelease-opam: false
       - name: depext
         run: |
           sudo apt update
           opam install . --depext-only --with-test --with-doc
       - name: setup-deploy
-        if: steps.cache-opam.outputs.cache-hit != 'true'
         run: |
           opam install . --deps-only --with-test --with-doc
           opam install bisect_ppx z3 ocb