Remove broken haskell-tools overrides.

These overrides no longer evaluate correctly and as a result break Nixpkgs
evaluation.

ping @shlevy

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

@@ -860,34 +860,4 @@ self: super: {
 
   # https://github.com/danidiaz/tailfile-hinotify/issues/2
   tailfile-hinotify = dontCheck super.tailfile-hinotify;
-} // (let scope' = self: super: {
-            haskell-tools-ast = super.haskell-tools-ast_0_6_0_0;
-            haskell-tools-backend-ghc = super.haskell-tools-backend-ghc_0_6_0_0;
-            haskell-tools-cli = super.haskell-tools-cli_0_6_0_0;
-            haskell-tools-daemon = super.haskell-tools-daemon_0_6_0_0;
-            haskell-tools-debug = super.haskell-tools-debug_0_6_0_0;
-            haskell-tools-demo = super.haskell-tools-demo_0_6_0_0;
-            haskell-tools-prettyprint = super.haskell-tools-prettyprint_0_6_0_0;
-            haskell-tools-refactor = super.haskell-tools-refactor_0_6_0_0;
-            haskell-tools-rewrite = super.haskell-tools-rewrite_0_6_0_0;
-          };
-      in {
-        haskell-tools-ast_0_6_0_0 =
-          super.haskell-tools-ast_0_6_0_0.overrideScope scope';
-        haskell-tools-backend-ghc_0_6_0_0 =
-          super.haskell-tools-backend-ghc_0_6_0_0.overrideScope scope';
-        haskell-tools-cli_0_6_0_0 =
-          dontCheck (super.haskell-tools-cli_0_6_0_0.overrideScope scope');
-        haskell-tools-daemon_0_6_0_0 =
-          dontCheck (super.haskell-tools-daemon_0_6_0_0.overrideScope scope');
-        haskell-tools-debug_0_6_0_0 =
-          super.haskell-tools-debug_0_6_0_0.overrideScope scope';
-        haskell-tools-demo_0_6_0_0 =
-          super.haskell-tools-demo_0_6_0_0.overrideScope scope';
-        haskell-tools-prettyprint_0_6_0_0 =
-          super.haskell-tools-prettyprint_0_6_0_0.overrideScope scope';
-        haskell-tools-refactor_0_6_0_0 =
-          super.haskell-tools-refactor_0_6_0_0.overrideScope scope';
-        haskell-tools-rewrite_0_6_0_0 =
-          super.haskell-tools-rewrite_0_6_0_0.overrideScope scope';
-     })
+}