tools: disable failing test envs in test-linux CI

29c0324 added a few test environments that are simply not working
20.x branch. Let's revert those changes that were unrelated, probably a
result of a sloppy conflict resolution.

Author: aduh95

.github/workflows/test-linux.yml

@@ -35,16 +35,11 @@ permissions:
 jobs:
   test-linux:
     if: github.event.pull_request.draft == false
-    runs-on: ${{ matrix.os }}
-    strategy:
-      fail-fast: false
-      matrix:
-        os: [ubuntu-24.04, ubuntu-24.04-arm]
+    runs-on: ubuntu-24.04
     steps:
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683  # v4.2.2
         with:
           persist-credentials: false
-          path: node
       - name: Set up Python ${{ env.PYTHON_VERSION }}
         uses: actions/setup-python@8d9ed9ac5c53483de85588cdf95a591a75ab9f55  # v5.5.0
         with:
@@ -56,13 +51,6 @@ jobs:
       - name: Environment Information
         run: npx envinfo
       - name: Build
-        run: make -C node build-ci -j4 V=1 CONFIG_FLAGS="--error-on-warn"
+        run: make build-ci -j4 V=1 CONFIG_FLAGS="--error-on-warn"
       - name: Test
-        run: make -C node run-ci -j4 V=1 TEST_CI_ARGS="-p actions --measure-flakiness 9"
-      - name: Re-run test in a folder whose name contains unusual chars
-        run: |
-          mv node "$DIR"
-          cd "$DIR"
-          ./tools/test.py --flaky-tests keep_retrying -p actions -j 4
-        env:
-          DIR: dir%20with $unusual"chars?'åß∂ƒ©∆¬…`
+        run: make run-ci -j4 V=1 TEST_CI_ARGS="-p actions --measure-flakiness 9"