drop unused arg flags

nixos-remote

@@ -12,10 +12,6 @@ Options:
 * -s, --store-paths
   set the store paths to the disko-script and nixos-system directly
   if this is give, flake is not needed
-* --arg name value
-  pass value to nix-build. can be used to set disk-names for example
-* --argstr name value
-  pass value to nix-build as string
 * --no-ssh-copy
   skip copying ssh-keys to target system
 * --kexec url
@@ -30,7 +26,6 @@ abort() {
   exit 1
 }
 
-nix_args=()
 kexec_url=https://github.com/nix-community/nixos-images/releases/download/nixos-22.05/nixos-kexec-installer-x86_64-linux.tar.gz
 
 while [[ $# -gt 0 ]]; do
@@ -45,11 +40,6 @@ while [[ $# -gt 0 ]]; do
       shift
       shift
       ;;
-    --argstr | --arg)
-      nix_args+=("$1" "$2" "$3")
-      shift
-      shift
-      ;;
     --help)
       showUsage
       exit 0