fix scheduled R CMD check

Author: KKulma

.github/workflows/scheduled-R-CMD-check.yaml

@@ -4,14 +4,6 @@ on:
   schedule:
   - cron: "0 6 * * *"
 
-jobs:
-  build:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-
-name: scheduled-R-CMD-check
-
 jobs:
   R-CMD-check:
     runs-on: ${{ matrix.config.os }}