[actions] skip ls check on node < 10; remove redundant finisher

Author: ljharb

.github/workflows/node-aught.yml

@@ -9,10 +9,4 @@ jobs:
       range: '< 10'
       type: minors
       command: npm run tests-only
-
-  node:
-    name: 'node < 10'
-    needs: [tests]
-    runs-on: ubuntu-latest
-    steps:
-      - run: 'echo tests completed'
+      skip-ls-check: true

.github/workflows/node-tens.yml

@@ -9,10 +9,3 @@ jobs:
       range: '>= 10'
       type: minors
       command: npm run tests-only
-
-  node:
-    name: 'node >= 10'
-    needs: [tests]
-    runs-on: ubuntu-latest
-    steps:
-      - run: 'echo tests completed'