No. Godmodding is giving your character godlike powers, such as being able to do anything, dodge anything, and always having the answer to any given problem in your back pocket. Goddmoding is givving your character abilities beyond the norm. Pretending your character is a good herbalist or cook is, well, just pretending. Goddmoding will irritate those around you, while pretending just adds atmosphere.
Now, being a dimwitted barkeep, or a powerless ghost is not godmodding. It is actualy underplaying your character's abilities. Now, If one was to play the best barkeep in the world who could pour you a drink and toss it across the room without spilling it, or a ghost that could set things on fire, and take over the mind of anyone it chose, that would be godmodding.