etcd: Use goPackages version

pkgs/servers/etcd/default.nix

@@ -1,25 +0,0 @@
-{ lib, goPackages, fetchFromGitHub }:
-
-with goPackages;
-
-buildGoPackage rec {
-  version = "2.0.0";
-  name = "etcd-${version}";
-  goPackagePath = "github.com/coreos/etcd";
-  src = fetchFromGitHub {
-    owner = "coreos";
-    repo = "etcd";
-    rev = "v${version}";
-    sha256 = "1s3jilzlqyh2i81pv79cgap6dfj7qrfrwcv4w9lic5ivznz413vc";
-  };
-
-  subPackages = [ "./" ];
-
-  meta = with lib; {
-    description = "A highly-available key value store for shared configuration and service discovery";
-    homepage = http://coreos.com/using-coreos/etcd/;
-    license = licenses.asl20;
-    maintainers = with maintainers; [ cstrahan ];
-    platforms = platforms.unix;
-  };
-}

pkgs/top-level/all-packages.nix

@@ -8885,7 +8885,7 @@ let
 
   dovecot_pigeonhole = callPackage ../servers/mail/dovecot-pigeonhole { };
 
-  etcd = callPackage ../servers/etcd { };
+  etcd = goPackages.etcd;
 
   ejabberd = callPackage ../servers/xmpp/ejabberd {
     erlang = erlangR16;