Don't emulate Sky server when --sky is passed.

mojo/devtools/common/mojo_run

Index: mojo/devtools/common/mojo_run
diff --git a/mojo/devtools/common/mojo_run b/mojo/devtools/common/mojo_run
index 778dd704d19f5811f3b3a25a5cd4f16e2ac99b7b..0adba393aba83c531b86b5ad0afcc17940d9e8b1 100755
--- a/mojo/devtools/common/mojo_run
+++ b/mojo/devtools/common/mojo_run
@@ -77,8 +77,6 @@ def main():
                       help='Window manager app to be mapped as '
                       'mojo:window_manager. By default it is ' +
                       _DEFAULT_WINDOW_MANAGER)
-  parser.add_argument('--sky',
-                      help='Loads the given Sky file.')
 
   script_args, shell_args = parser.parse_known_args()
 
@@ -121,15 +119,6 @@ def main():
                                                   'mojo:window_manager=%s' %
                                                   script_args.window_manager)
 
-  if script_args.sky:
-    if not mojo_paths:
-      print 'Running with --sky is not supported outside of the Mojo checkout.'
-      # See https://github.com/domokit/devtools/issues/27.
-      return 1
-    shell_args.extend(shell_arguments._configure_sky(shell, mojo_paths['root'],
-                                                     mojo_paths['sky_packages'],
-                                                     script_args.sky))
-
   if script_args.verbose:
     print "Shell arguments: " + str(shell_args)