CI: fix the workflow file (an empty env block made it invalid) (#1877)

Co-authored-by: Claude Opus 5.5 <[email protected]>

.github/workflows/ci.yml

@@ -134,10 +134,7 @@ jobs:
     name: Native Linux Clippy
     needs: changes
     if: needs.changes.outputs.native == 'true'
-    # Main and merge-queue runs use the self-hosted runner (warm build cache); pull requests
-    # stay on GitHub's runners, and the runner itself refuses pull-request jobs.
     runs-on: ubuntu-24.04
-    env:
     timeout-minutes: 30
     steps:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
@@ -161,8 +158,6 @@ jobs:
     name: Build tests
     needs: changes
     if: needs.changes.outputs.native == 'true'
-    # Main and merge-queue runs use the self-hosted runner (warm build cache); pull requests
-    # stay on GitHub's runners, and the runner itself refuses pull-request jobs.
     runs-on: ubuntu-24.04
     timeout-minutes: 45
     env:
@@ -361,8 +356,6 @@ jobs:
     name: Doc tests
     needs: changes
     if: needs.changes.outputs.native == 'true'
-    # Main and merge-queue runs use the self-hosted runner (warm build cache); pull requests
-    # stay on GitHub's runners, and the runner itself refuses pull-request jobs.
     runs-on: ubuntu-24.04
     timeout-minutes: 45
     env: