idris: drop obsolete package, it doesn't compile anywhere

pkgs/development/compilers/idris/default.nix

@@ -1,25 +0,0 @@
-{ cabal, binary, Cabal, filepath, happy, haskeline, mtl, parsec
-, split, transformers
-}:
-
-cabal.mkDerivation (self: {
-  pname = "idris";
-  version = "0.9.7";
-  sha256 = "0y3rnxbs2s7kxlzlc347vwpylw2p0pdz50zgkyii21gd6klqvd45";
-  isLibrary = false;
-  isExecutable = true;
-  buildDepends = [
-    binary Cabal filepath haskeline mtl parsec split transformers
-  ];
-  buildTools = [ happy ];
-  meta = {
-    homepage = "http://www.idris-lang.org/";
-    description = "Functional Programming Language with Dependent Types";
-    license = self.stdenv.lib.licenses.bsd3;
-    platforms = self.ghc.meta.platforms;
-    maintainers = [
-      self.stdenv.lib.maintainers.andres
-      self.stdenv.lib.maintainers.simons
-    ];
-  };
-})

pkgs/top-level/haskell-packages.nix

@@ -2060,8 +2060,6 @@ let result = let callPackage = x : y : modifyPrio (newScope result.final x y);
 
   flapjax = callPackage ../development/compilers/flapjax {};
 
-  idris = callPackage ../development/compilers/idris {};
-
   pakcs = callPackage ../development/compilers/pakcs {};
 
   # Development tools.