Move slurm to pkgs/slurm

pkgs/overlay.nix

@@ -1,21 +1,3 @@
 final: prev:
 {
-  slurm = prev.slurm.overrideAttrs (old: {
-    patches = (old.patches or []) ++ [
-      # See https://bugs.schedmd.com/show_bug.cgi?id=19324
-      ./slurm-rank-expansion.patch
-    ];
-    # Install also the pam_slurm_adopt library to restrict users from accessing
-    # nodes with no job allocated.
-    postBuild = (old.postBuild or "") + ''
-      pushd contribs/pam_slurm_adopt
-        make "PAM_DIR=$out/lib/security"
-      popd
-    '';
-    postInstall = (old.postInstall or "") + ''
-      pushd contribs/pam_slurm_adopt
-        make "PAM_DIR=$out/lib/security" install
-      popd
-    '';
-  });
 }