This cleans up the clang-tools_11 attribute, affects tazjin's frog and
aspen's home-manager configuration. achilles remains with pinned
llvmPackages, but it doesn't build at the moment, so it's impossible to
test.
Change-Id: I53416bf7c99f363163de29b32678a82b9eb5adbd
Reviewed-on: https://cl.tvl.fyi/c/depot/+/10644
Autosubmit: sterni <sternenseemann@systemli.org>
Reviewed-by: aspen <root@gws.fyi>
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
9a09505b77