No need for vcpkg

.github/workflows/pr-realm-js.yml

@@ -67,26 +67,6 @@ jobs:
         if: ${{ runner.os == 'Windows' }}
         uses: ilammy/msvc-dev-cmd@v1
 
-      - name: Get vcpkg submodule commit sha
-        if: ${{ runner.os == 'Windows' }}
-        id: vcpkg_cache_key
-        working-directory: vendor/realm-core/tools/vcpkg/ports
-        shell: bash
-        run: echo "::set-output name=commit::$(git rev-parse HEAD)"
-
-      - name: Setup Vcpkg
-        if: ${{ runner.os == 'Windows' }}
-        uses: friendlyanon/setup-vcpkg@v1
-        with:
-          path: vendor/realm-core/tools/vcpkg/ports
-          cache-key: vcpkg-windows-${{ matrix.variant.arch }}-${{ steps.vcpkg_cache_key.outputs.commit }}-${{ hashFiles('./vendor/realm-core/tools/vcpkg/vcpkg.json') }}
-          cache-restore-keys: vcpkg-windows-${{ matrix.variant.arch }}-${{ steps.vcpkg_cache_key.outputs.commit }}-${{ hashFiles('./vendor/realm-core/tools/vcpkg/vcpkg.json') }}
-
-      - name: Refetch Vcpkg
-        if: ${{ runner.os == 'Windows' }}
-        run: git fetch --unshallow
-        working-directory: vendor/realm-core/tools/vcpkg/ports
-
       # ninja-build is used by default if available and results in faster build times
       # On linux, electron requires a connected display.  We fake this by giving it a headless environment using xvfb
       # Relevant issue: https://github.com/juliangruber/browser-run/issues/147