Remove sphinx override

Author: hamishmack

overlays/bootstrap.nix

@@ -76,7 +76,7 @@ in {
                   materialized = ../materialized/happy-1.20.0;
                 };
             };
-            sphinx = with final.buildPackages; python3Packages.sphinx_1_7_9 or sphinx_5;
+            sphinx = final.buildPackages.sphinx;
 
             D5123-patch = final.fetchpatch rec { # https://phabricator.haskell.org/D5123
                 url = "http://tarballs.nixos.org/sha256/${sha256}";

overlays/default.nix

@@ -77,7 +77,6 @@ let
     armv6l-linux = import ./armv6l-linux.nix;
     musl = import ./musl.nix;
     android = import ./android.nix;
-    sphinx = import ./sphinx.nix;
     tools = import ./tools.nix;
     emscripten = import ./emscripten.nix;
     nix-prefetch-git-minimal = import ./nix-prefetch-git-minimal.nix;
@@ -127,7 +126,6 @@ let
     hydra
     # Restore nixpkgs haskell and haskellPackages
     (_: prev: { inherit (prev.haskell-nix-prev) haskell haskellPackages; })
-    sphinx
     dummy-ghc-data
     cacheCompilerDeps
     default-setup