Do not install system dependencies on Linux

(try to fix failure in GitHub Actions)

Author: hsonne

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

@@ -57,14 +57,6 @@ jobs:
           key: ${{ runner.os }}-r-${{ matrix.config.r }}-3-${{ hashFiles('depends.Rds') }}
           restore-keys: ${{ runner.os }}-r-${{ matrix.config.r }}-3-
 
-      - name: Install system dependencies
-        if: runner.os == 'Linux'
-        env:
-          RHUB_PLATFORM: linux-x86_64-ubuntu-gcc
-        run: |
-          Rscript -e "remotes::install_github('r-hub/sysreqs')"
-          sysreqs=$(Rscript -e "cat(sysreqs::sysreq_commands('DESCRIPTION'))")
-          sudo -s eval "$sysreqs"
       - name: Install dependencies
         run: |
           remotes::install_deps(dependencies = TRUE)