default.nix: rm neat-interpolation override

Author: Anton-Latukha

default.nix

@@ -223,11 +223,6 @@ let
     root = packageRoot;
 
     overrides = self: super: {
-      # 2020-06-26 Due to a behaviour change in neat-interpolation-0.4, we
-      # require n-i >= 0.4. dontCheck helps us avoid conflicts with
-      # neat-interpolation's test dependencies.
-      neat-interpolation = pkgs.haskell.lib.dontCheck super.neat-interpolation_0_5_1_2;
-
       # 2020-07-23 hnix uses multiple functions that are unavailable in
       # data-fix < 0.3.
       data-fix = haskellPackages.callPackage