Remove obsolete err.h check
Remove obsolete err.h check

rycee/nix,peti/nix,ysangkok/nix,dtzWill/nix,dtzWill/nix,zimbatm/nix,ehmry/nix,NixOS/nix,zimbatm/nix,bennofs/nix,NixOS/nix,peti/nix,zimbatm/nix,dezgeg/nix,NixOS/nix,dtzWill/nix,ehmry/nix,layus/nix,dtzWill/nix,pikajude/nix,dezgeg/nix,ehmry/nix,bennofs/nix,rycee/nix,peti/nix,shlevy/nix,ysangkok/nix,bennofs/nix,layus/nix,rycee/nix,NixOS/nix,pikajude/nix,vcunat/nix,vcunat/nix,rycee/nix,shlevy/nix,dezgeg/nix,bennofs/nix,layus/nix,zimbatm/nix,ehmry/nix,dezgeg/nix,pikajude/nix,vcunat/nix,layus/nix,ehmry/nix,peti/nix,ysangkok/nix,ehmry/nix,dtzWill/nix,shlevy/nix,shlevy/nix,layus/nix,NixOS/nix,peti/nix,shlevy/nix,dezgeg/nix,vcunat/nix,rycee/nix