libwebsockets: revert making libuv a propagated build input

it is possible to use libwebsockets without libuv

cc @volth

pkgs/development/libraries/libwebsockets/default.nix

@@ -11,8 +11,7 @@ stdenv.mkDerivation rec {
     sha256 = "1hv2b5r6sg42xnqhm4ysjvyiz3cqpfmwaqm33vpbx0k7arj4ixvy";
   };
 
-  buildInputs = [ cmake openssl zlib ];
-  propagatedBuildInputs = [ libuv ];
+  buildInputs = [ cmake openssl zlib libuv ];
   cmakeFlags = [ "-DLWS_WITH_PLUGINS=ON" ];
 
   meta = {

pkgs/servers/mqtt/mosquitto/default.nix

@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, openssl, libuuid, cmake, libwebsockets, c-ares }:
+{ stdenv, fetchurl, openssl, libuuid, cmake, libwebsockets, c-ares, libuv }:
 
 stdenv.mkDerivation rec {
   pname = "mosquitto";
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
     sha256 = "1la2577h7hcyj7lq26vizj0sh2zmi9m7nbxjp3aalayi66kiysqm";
   };
 
-  buildInputs = [ openssl libuuid libwebsockets c-ares ]
+  buildInputs = [ openssl libuuid libwebsockets c-ares libuv ]
     ++ stdenv.lib.optional stdenv.isDarwin cmake;
 
   makeFlags = [