Nix-expr style review

Unneded args.something replaced with
args: with args;
line. After this line args is the only place where we can recieve variables from.

Also removed several
buildInputs = [];
lines.

svn path=/nixpkgs/trunk/; revision=10415

pkgs/applications/misc/pstree/default.nix

@@ -1,14 +1,13 @@
-args:
-args.stdenv.mkDerivation {
+args: with args;
+stdenv.mkDerivation {
   name = "pstree-2.31";
 
-  src = args.fetchurl {
+  src = fetchurl {
     url = http://fresh.t-systems-sfr.com/unix/src/misc/pstree-2.31.tar.gz;
     sha256 = "1zzz29gsyra8csk54cyq0pcdxxg3l4gmksq8q1skv2z84g2yxdhh";
   };
 
   unpackPhase="unpackFile \$src; sourceRoot=.";
-  #buildInputs =(with args; []);
   
   buildPhase="pwd; gcc -o pstree pstree.c";
   installPhase="ensureDir \$out/bin; cp pstree \$out/bin";