Disable trunk self-hosted build until next tag

Author: finagolfin

.github/workflows/pull_request.yml

@@ -32,10 +32,6 @@ jobs:
              build-type: 'docker'
              build-compiler: '1'
              runner: 'self-hosted'
-           - swift-version: 'development'
-             build-type: 'docker'
-             build-compiler: '1'
-             runner: 'self-hosted'
            - swift-version: 'swift-6.2-branch'
              build-type: 'docker'
              build-compiler: '0'