makewatch: Remove "user" setting

While there was documentation suggesting you could limit the search by
user, the code was not written to do such.  This could be implimented in
the future, but for now, I'm just going to remove the comment.

i3pystatus/makewatch.py

@@ -10,7 +10,6 @@ class MakeWatch(IntervalModule):
     """
 
     settings = (
-        ("user", "Specifies which user to track. Null means all users"),
         ("name", "Listen for a job other than 'make' jobs"),
         ("running_color", "Text color while the job is running"),
         ("idle_color", "Text color while the job is not running"),