proxmox-backup-client: avoid git as buildInput

The build script of the `pbs-buildcfg` crate either uses `REPOID` from
the environment or runs `git rev-parse HEAD`. The latter case results in
an empty string anyway, so just fast-track it.

Signed-off-by: Christoph Heiss <christoph@c8h4.io>

pkgs/by-name/pr/proxmox-backup-client/package.nix

@@ -10,7 +10,6 @@
   libuuid,
   acl,
   libxcrypt,
-  git,
   installShellFiles,
   sphinx,
   systemd,
@@ -149,8 +148,10 @@ rustPlatform.buildRustPackage {
 
   doCheck = false;
 
+  # pbs-buildcfg requires this set, would be the git commit id
+  REPOID = "";
+
   nativeBuildInputs = [
-    git
     pkg-config
     pkgconf
     rustPlatform.bindgenHook