Remove UserLock self-lock check
Remove UserLock self-lock check

This is no longer needed since we're not using POSIX locks anymore.

ehmry/nix,pikajude/nix,rycee/nix,NixOS/nix,ehmry/nix,NixOS/nix,pikajude/nix,rycee/nix,NixOS/nix,ehmry/nix,ehmry/nix,ehmry/nix,pikajude/nix,rycee/nix,NixOS/nix,rycee/nix,NixOS/nix,rycee/nix,ehmry/nix