haskell-hashable: drop obsolete version 1.1.2.5

pkgs/development/libraries/haskell/hashable/1.1.2.5.nix

@@ -1,22 +0,0 @@
-# This file was auto-generated by cabal2nix. Please do NOT edit manually!
-
-{ cabal, QuickCheck, random, testFramework
-, testFrameworkQuickcheck2, text
-}:
-
-cabal.mkDerivation (self: {
-  pname = "hashable";
-  version = "1.1.2.5";
-  sha256 = "0gbiaj5ck2bvvinndp2pg7qsm2h2izbnz9wi97dbm7i8r4qd9d9z";
-  buildDepends = [ text ];
-  testDepends = [
-    QuickCheck random testFramework testFrameworkQuickcheck2 text
-  ];
-  meta = {
-    homepage = "http://github.com/tibbe/hashable";
-    description = "A class for types that can be converted to a hash value";
-    license = self.stdenv.lib.licenses.bsd3;
-    platforms = self.ghc.meta.platforms;
-    hydraPlatforms = self.stdenv.lib.platforms.none;
-  };
-})