Update pull_request.yml

Author: MaxDesiatov

.github/workflows/pull_request.yml

@@ -29,7 +29,6 @@ jobs:
     name: Build WebGPU Demo
     uses: swiftlang/github-workflows/.github/workflows/swift_package_test.yml@main
     with:
-      enable_embedded_wasm_sdk_build: true
       wasm_exclude_swift_versions: '[{"swift_version": "nightly-6.2"}]'
       enable_linux_checks: false
       enable_macos_checks: false