Revert of Adding mac support for Remoting host GN builds.

remoting/remoting_enable.gni

Index: remoting/remoting_enable.gni
diff --git a/remoting/remoting_enable.gni b/remoting/remoting_enable.gni
index d42a2e3333898b1b219c64298dca2aa2c5c27d03..365cf8bfc22db4a4240dbbafe6d741b11e56006a 100644
--- a/remoting/remoting_enable.gni
+++ b/remoting/remoting_enable.gni
@@ -9,7 +9,14 @@
 enable_remoting_host = false
 enable_me2me_host = false
 
-if (is_win || (is_linux && !is_chromeos && use_x11) || is_mac) {
+# TODO(GYP) Make remoting hosts work on Mac.
+# TODO(gyp): Enable once https://crbug.com/611859 is fixed.
+#if (is_mac) {
+#  enable_remoting_host = true
+#  enable_me2me_host = true
+#}
+
+if (is_win || (is_linux && !is_chromeos && use_x11)) {
   enable_remoting_host = true
   enable_me2me_host = true
 }