stack: drop released patch

Author: sternenseemann

pkgs/development/haskell-modules/configuration-common.nix

@@ -161,30 +161,6 @@ with haskellLib;
     hackage-db-unstable
     ;
 
-  # Stack uses pure nix-shells for certain operations including HTTPS requests
-  # This patch makes stack add pkgs.cacert, so the certificate DB is available.
-  # https://github.com/commercialhaskell/stack/pull/6854 krank:ignore-line
-  stack =
-    appendPatches
-      [
-        (pkgs.fetchpatch {
-          name = "stack-add-cacert-to-pure-shells.patch";
-          url = "https://github.com/commercialhaskell/stack/commit/e869263cbd84a9e59ce1fa467e82993c8e7fb1dd.patch";
-          hash = "sha256-O7GaNgcGBY6m6GHqVtejqOu2HCWWKWXARPnr/upT1RQ=";
-          includes = [ "src/Stack/Nix.hs" ];
-        })
-      ]
-      (
-        overrideCabal (drv: {
-          # Stack's source files use CRLF
-          prePatch = ''
-            ${drv.prePatch or ""}
-            sed -i -e 's/\r$//' src/Stack/Nix.hs
-          '';
-        }) super.stack
-      );
-
-  # Extensions wants a specific version of Cabal for its list of Haskell
   # language extensions.
   extensions = doJailbreak (
     super.extensions.override {