treewide: remove unused buildEnv parameters

pkgs/applications/editors/lighttable/default.nix

@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, buildEnv, zlib, glib, alsaLib, makeDesktopItem
+{ stdenv, fetchurl, zlib, glib, alsaLib, makeDesktopItem
 , dbus, gtk2, atk, pango, freetype, fontconfig, libgnome_keyring3, gdk_pixbuf
 , cairo, cups, expat, libgpgerror, nspr, gnome3, nss, xorg, systemd, libnotify
 }:

pkgs/applications/networking/browsers/google-chrome/default.nix

@@ -1,4 +1,4 @@
-{ stdenv, buildEnv, fetchurl, patchelf, bash
+{ stdenv, fetchurl, patchelf, bash
 
 # Linked dynamic libraries.
 , glib, fontconfig, freetype, pango, cairo, libX11, libXi, atk, gconf, nss, nspr

pkgs/applications/networking/cluster/panamax/api/default.nix

@@ -1,4 +1,4 @@
-{ stdenv, buildEnv, fetchgit, fetchurl, makeWrapper, bundlerEnv, bundler
+{ stdenv, fetchgit, fetchurl, makeWrapper, bundlerEnv, bundler
 , ruby, libxslt, libxml2, sqlite, openssl, docker
 , dataDir ? "/var/lib/panamax-api" }@args:
 

pkgs/development/beam-modules/build-rebar3.nix

@@ -1,5 +1,5 @@
 { stdenv, writeText, erlang, rebar3, openssl, libyaml,
-  pc, buildEnv, lib }:
+  pc, lib }:
 
 { name, version
 , src

pkgs/development/guile-modules/guile-sdl2/default.nix

@@ -8,8 +8,7 @@
   fetchgit,
   guile,
   libtool,
-  pkgconfig,
-  buildEnv
+  pkgconfig
   }:
 stdenv.mkDerivation rec {
   name = "guile-sdl2-${version}";

pkgs/os-specific/linux/nvidia-x11/generic.nix

@@ -8,7 +8,7 @@
 , preferGtk2 ? false
 }:
 
-{ stdenv, callPackage, callPackage_i686, buildEnv, fetchurl
+{ stdenv, callPackage, callPackage_i686, fetchurl
 , kernel ? null, xorg, zlib, perl, nukeReferences
 , # Whether to build the libraries only (i.e. not the kernel module or
   # nvidia-settings).  Used to support 32-bit binaries on 64-bit

pkgs/tools/audio/darkice/default.nix

@@ -1,4 +1,4 @@
-{ stdenv, buildEnv, fetchurl, pkgconfig
+{ stdenv, fetchurl, pkgconfig
 , libjack2, alsaLib, libpulseaudio
 , faac, lame, libogg, libopus, libvorbis, libsamplerate
 }: