Don't double-initialize vcpkg

Author: fredemmott

.github/workflows/build.yml

@@ -21,9 +21,6 @@ jobs:
           github_token: ${{secrets.GITHUB_TOKEN}}
       - name: Make build directory
         run: cmake -E make_directory build
-      - name: "Initialize vcpkg"
-        working-directory: build
-        run: ../third-party/vcpkg/bootstrap-vcpkg.bat
       - name: Configure
         working-directory: build
         id: configure