Revert "Meson: Fix cocoa and carbon support"

This reverts commit 2e3769a4f7.

gio/meson.build

@@ -417,11 +417,10 @@ if host_system != 'windows'
     contenttype_sources += files('gcontenttype.c')
     appinfo_sources += files('gdesktopappinfo.c')
     gio_unix_include_headers += files('gdesktopappinfo.h')
+    subdir('xdgmime')
+    internal_deps += [xdgmime_lib]
   endif
 
-  subdir('xdgmime')
-  internal_deps += [xdgmime_lib]
-
   install_headers(gio_unix_include_headers, subdir : 'gio-unix-2.0/gio')
 
   if glib_conf.has('HAVE_NETLINK')
@@ -795,7 +794,6 @@ libgio = library('gio-2.0',
                   libgobject_dep, libgmodule_dep, selinux_dep, xattr_dep,
                   platform_deps, network_libs],
   c_args : gio_c_args,
-  objc_args : gio_c_args,
   # intl.lib is not compatible with SAFESEH
   link_args : [noseh_link_args, glib_link_flags],
 )
@@ -941,7 +939,7 @@ executable('gdbus', 'gdbus-tool.c',
   link_args : noseh_link_args,
   dependencies : [libgio_dep, libgobject_dep, libgmodule_dep, libglib_dep])
 
-if host_system != 'windows' and not glib_have_cocoa
+if host_system != 'windows'
   executable('gapplication', 'gapplication-tool.c',
     install : true,
     c_args : gio_c_args,