Fix 1.10 handling of EnzymeCore in Integration.yml (#2625)

Author: vchuravy

.github/workflows/Integration.yml

@@ -56,7 +56,6 @@ jobs:
         with:
           version: ${{ matrix.version }}
       - uses: julia-actions/cache@v2
-      - uses: julia-actions/julia-buildpkg@v1
       - name: "Install Dependencies"
         run: |
             julia --color=yes --project=test/integration/${{ matrix.package }} --threads=auto --check-bounds=yes -O1 -e 'using Pkg; Pkg.develop([PackageSpec(; path) for path in (".", "lib/EnzymeCore")])'