[pkgs] fixing sample applications.

pkgs/applications/simple/dgemm_randomwalk.nix

-{ stdenv, src, zeromq, intel, gsl, libnrm, mpich2}:
+{ stdenv, src, intel, gsl, libnrm, mpich2}:
 stdenv.mkDerivation {
   inherit src;
   name = "simple-benchmarks";
 
-  requiredSystemFeatures = [ "icc"];
-
-  buildInputs = [ zeromq intel.mkl intel.WrappedICC gsl libnrm mpich2 ];
+  buildInputs = [ intel.mkl intel.WrappedICC gsl libnrm mpich2 ];
 
   buildPhase = "cd simple; make";
 

pkgs/applications/simple/graph500.nix

-{ stdenv, src, fetchgit, mpich2, zeromq, libnrm }:
+{ stdenv, src, fetchgit, mpich2, libnrm }:
 stdenv.mkDerivation {
   inherit src;
   name = "graph500";

pkgs/default.nix

@@ -75,7 +75,7 @@ let
     rec {
       raw = pkgs.lib.mapAttrs rawApplication paths;
       nrm = (pkgs.lib.mapAttrs instrumentedApplication paths) // {
-        dgemm_randomwalk = cpBothAlternatePin applications/simple {inherit intel; inherit (nodelevel) libnrm;} "dgemm_randomwalk";
+        dgemm_randomwalk = cpBothAlternatePin applications/simple { inherit (nodelevel) libnrm;} "dgemm_randomwalk";
         graph500 = cpBothAlternatePin applications/simple { inherit (nodelevel) libnrm;} "graph500";
       };
     };