Update python test scripts for gobject-introspection

src/python/ibus.py

@@ -4,7 +4,6 @@ from gi.repository.IBus import \
     Bus, \
     Component, \
     Config, \
-    Connection, \
     Engine, \
     EngineDesc, \
     Factory, \
@@ -18,6 +17,5 @@ from gi.repository.IBus import \
     Property, \
     Proxy, \
     Serializable, \
-    Server, \
     Service, \
     Text

src/python/test.py

@@ -1,5 +1,7 @@
 import ibus
 bus = ibus.Bus()
-ibus.Engine.new("pinyin", "/aa", bus.get_connection())
-for e in bus.list_engines():
-    print e.name
+if not bus.is_connected():
+    print "Can not connect to ibus-daemon"
+else:
+    for e in bus.list_engines():
+        print e.get_name()