depends: xproto is only directly needed by libXau

depends/packages/libxcb.mk

@@ -3,7 +3,7 @@ $(package)_version=1.10
 $(package)_download_path=https://xcb.freedesktop.org/dist
 $(package)_file_name=$(package)-$($(package)_version).tar.bz2
 $(package)_sha256_hash=98d9ab05b636dd088603b64229dd1ab2d2cc02ab807892e107d674f9c3f2d5b5
-$(package)_dependencies=xcb_proto libXau xproto
+$(package)_dependencies=xcb_proto libXau
 
 define $(package)_set_vars
 $(package)_config_opts=--disable-static