don't try caching docker

.github/workflows/esp-idf-v4.3-build.yml

@@ -43,7 +43,6 @@ jobs:
         path: |
           ~/build
           ~/components/wifi-manager/webapp/node_modules
-          /var/lib/docker
         key: ${{ runner.os }}-${{ matrix.node }}
     - name: Set build parameters
       run: |