vimPlugins.nvim-treesitter: remove ocamllex override

Was fixed upstream and bumped in
https://github.com/NixOS/nixpkgs/commit/42fa8486dc767cce4bed3b5fb2fdb0f8928ee079

Signed-off-by: Austin Horstman <khaneliman12@gmail.com>

pkgs/applications/editors/vim/plugins/nvim-treesitter/overrides.nix

@@ -1,6 +1,5 @@
 {
   lib,
-  stdenv,
   callPackage,
   tree-sitter,
   neovim,
@@ -16,17 +15,6 @@ let
   inherit (neovimUtils) grammarToPlugin;
 
   overrides = prev: {
-    ocamllex =
-      if stdenv.hostPlatform.isDarwin then
-        # remove after https://github.com/314eter/tree-sitter-ocamllex/issues/10 is resolved
-        # see https://github.com/NixOS/nixpkgs/pull/394636
-        (prev.ocamllex.overrideAttrs {
-          src = prev.ocamllex.src.override {
-            hash = "sha256-UBGVc98lrtTCp/kYDEFM/8iG9n7Tekx+xbE7Wdyp2uQ=";
-          };
-        })
-      else
-        prev.ocamllex;
   };
 
   generatedGrammars =