Update pull_request.yml to really only build the full docker compiler with tests

Author: finagolfin

.github/workflows/pull_request.yml

@@ -28,24 +28,16 @@ jobs:
        fail-fast: false
        matrix:
          #build-type: ['docker']
-         build-type: ['docker', 'local']
+         build-type: ['docker']
          #build-compiler: ['0', '1']
-         build-compiler: ['0']
+         build-compiler: ['1']
          # blank arch builds all (aarch64,x86_64,armv7)
          arch: ['']
          # builds only x86_64 to speed up the validation
          #arch: ['x86_64']
          # build both the quick (x86_64) and complete (aarch64,x86_64,armv7) SDKs
          #arch: ['x86_64', '']
-         swift-version: ['release', 'swift-6.2-branch', 'development']
-         # add docker-specific variants that run the compiler validation tests
-         include:
-           - swift-version: 'swift-6.2-branch'
-             build-type: 'docker'
-             build-compiler: '1'
-           - swift-version: 'development'
-             build-type: 'docker'
-             build-compiler: '1'
+         swift-version: ['swift-6.2-branch', 'development']
      runs-on: ubuntu-24.04
      steps:
       - name: Free Disk Space