ocarina: Create settings window every time

Trying to save the window each time wasn't working well.  I found that
clicking the preferences button a second time would display an empty
window, rather than what was saved.  The user probably won't notice the
time it takes to create the window again.

ocarina/settings/__init__.py

@@ -3,12 +3,7 @@
 import ocarina
 gtk = ocarina.gtk
 
-window = None
-pages  = None
-
-def create_window():
-	global window
-	global pages
+def configure():
 	import general
 
 	window = gtk.Window()
@@ -19,8 +14,4 @@ def create_window():
 	pages.show()
 
 	pages.append_page(general.get_page(), gtk.Label("General"))
-
-def configure():
-	if window == None:
-		create_window()
 	window.show()