remove pull and update steps

Author: joeljonsson

.github/workflows/quick-test.yml

@@ -49,9 +49,6 @@ jobs:
         run: |
           cd ${{ env.VCPKG_ROOT }}
           git checkout master
-          git fetch
-          git pull
-          ./vcpkg update
 
       # Setup the build machine with the most recent versions of CMake and Ninja. Both are cached if not already: on subsequent runs both will be quickly restored from GitHub cache service.
       - uses: lukka/get-cmake@latest