Delete empty mojo python package, and prefix all python packages with mojo_

mojo/python/tests/bindings_serialization_deserialization_unittest.py

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import math
 
 import mojo_unittest
 
 # pylint: disable=E0611,F0401
-import mojo.bindings.serialization as serialization
-import mojo.system
+import mojo_bindings.serialization as serialization
+import mojo_system
 
 # Generated files
 # pylint: disable=F0401
 import sample_import_mojom
 import sample_import2_mojom
 import sample_service_mojom
 
 
 def _NewHandle():
-  return mojo.system.MessagePipe().handle0
+  return mojo_system.MessagePipe().handle0
 
 
 def _NewBar():
   bar_instance = sample_service_mojom.Bar()
   bar_instance.alpha = 22
   bar_instance.beta = 87
   bar_instance.gamma = 122
   bar_instance.type = sample_service_mojom.Bar.Type.BOTH
   return bar_instance
 
@@ skipping 61 matching lines @@
     # NaN needs to be a special case.
     self.assertNotEquals(v1, v2)
     self.assertTrue(math.isnan(v2.a28))
     self.assertTrue(math.isnan(v2.a31))
     v1.a28 = v2.a28 = v1.a31 = v2.a31 = 0
     self.assertEquals(v1, v2)
 
   def testFooDeserializationError(self):
     with self.assertRaises(Exception):
       sample_service_mojom.Foo.Deserialize("", [])