Disable cache, it doesn't work anyway

.forgejo/install-emacs/action.yml

@@ -7,23 +7,7 @@ inputs:
 runs:
   using: 'composite'
   steps:
-    - name: Restore cached version
-      id: cache-restore
-      uses: https://code.forgejo.org/actions/cache/restore@v4
-      if: inputs.version != 'snapshot'
-      with:
-        path: |
-          /nix/store
-        key: ${{ inputs.version }}-${{ hashFiles('**/flake.lock') }}
     - run: ${{ github.action_path }}/install.sh
       shell: bash
       env:
         INPUT_VERSION: ${{ inputs.version }}
-    - name: Cache version
-      id: cache-put
-      uses: https://code.forgejo.org/actions/cache/save@v4
-      if: inputs.version != 'snapshot'
-      with:
-        path: |
-          /nix/store
-        key: ${{ inputs.version }}-${{ hashFiles('**/flake.lock') }}