clean workflow files

.woodpecker/update-package-index-redhat-8-arm64.yaml

@@ -21,8 +21,6 @@ steps:
     volumes:
       - arm64-binaries-r-dep-cache-redhat-8:/mnt/cache
     commands:
-      # download latest package version (avoid having to rebuild image every time)
-      # rscript_startup arg: required to pass down global option to future workers https://github.com/HenrikBengtsson/future/issues/134#issuecomment-2245666169
       - git clone https://pat-s:$$git_ro_token@git.devxy.io/devxy/r-pkg-binaries.git .
       - rm -rf /mnt/cache/packages/*
       - R -q -e 'pak::pak("git::https://gitlab.com/devxy/r-package-binaries/bincraftr.git")'