Remove unused Darcs expression

pkgs/applications/version-management/darcs/default.nix

@@ -1,36 +0,0 @@
-# This file was auto-generated by cabal2nix. Please do NOT edit manually!
-
-{ cabal, curl, extensibleExceptions, filepath, hashedStorage
-, haskeline, html, HTTP, mmap, mtl, network, networkUri, parsec
-, random, regexCompat, tar, terminfo, text, utf8String, vector
-, zlib
-}:
-
-cabal.mkDerivation (self: {
-  pname = "darcs";
-  version = "2.8.5";
-  sha256 = "16g3ayw0wwhkjpprlkzi971ibs4dp152bmaa487512cwb3ni0hq6";
-  isLibrary = true;
-  isExecutable = true;
-  doCheck = false;
-  buildDepends = [
-    extensibleExceptions filepath hashedStorage haskeline html HTTP
-    mmap mtl network networkUri parsec random regexCompat tar terminfo
-    text utf8String vector zlib
-  ];
-  extraLibraries = [ curl ];
-  postInstall = ''
-    mkdir -p $out/etc/bash_completion.d
-    mv contrib/darcs_completion $out/etc/bash_completion.d/darcs
-  '';
-  patchPhase = ''
-    sed -i -e 's|random.*==.*|random|' -e 's|text.*>=.*,|text,|' darcs.cabal
-  '';
-  meta = {
-    homepage = "http://darcs.net/";
-    description = "a distributed, interactive, smart revision control system";
-    license = "GPL";
-    platforms = self.ghc.meta.platforms;
-    maintainers = [ self.stdenv.lib.maintainers.andres ];
-  };
-})