php: Drop package composer1

Composer2 has been stable for some time now.

pkgs/development/php-packages/composer/1.x.nix

@@ -1,34 +0,0 @@
-{ mkDerivation, fetchurl, makeWrapper, unzip, lib, php }:
-let
-  pname = "composer";
-  version = "1.10.22";
-in
-mkDerivation {
-  inherit pname version;
-
-  src = fetchurl {
-    url = "https://getcomposer.org/download/${version}/composer.phar";
-    sha256 = "00073smi1jja00d4bqfs6p4fqs38mki2ziy7b1kwsmiv5lcsw9v1";
-  };
-
-  dontUnpack = true;
-
-  nativeBuildInputs = [ makeWrapper ];
-
-  installPhase = ''
-    runHook preInstall
-    mkdir -p $out/bin
-    install -D $src $out/libexec/composer/composer.phar
-    makeWrapper ${php}/bin/php $out/bin/composer \
-      --add-flags "$out/libexec/composer/composer.phar" \
-      --prefix PATH : ${lib.makeBinPath [ unzip ]}
-    runHook postInstall
-  '';
-
-  meta = with lib; {
-    description = "Dependency Manager for PHP";
-    license = licenses.mit;
-    homepage = "https://getcomposer.org/";
-    maintainers = with maintainers; [ offline ] ++ teams.php.members;
-  };
-}

pkgs/top-level/php-packages.nix

@@ -27,8 +27,6 @@ lib.makeScope pkgs.newScope (self: with self; {
 
     composer = callPackage ../development/php-packages/composer { };
 
-    composer1 = callPackage ../development/php-packages/composer/1.x.nix { };
-
     deployer = callPackage ../development/php-packages/deployer { };
 
     php-cs-fixer = callPackage ../development/php-packages/php-cs-fixer { };