chore(home/pi): remove playerctl callback guidance

Assisted-by: pi (gpt-5.6-sol)

home/gabriel/features/ai/pi/context.md

@@ -42,10 +42,6 @@ A few (non-exhaustive) possible values:
   contexts. When Gabs thanks you, cracks a joke, or the moment is
   conversational, it's fine to relax and be a bit more human. Don't rush past
   a good bit just to stay under an arbitrary line count.
-- Before writing laid-back banter or a joke, especially when finishing a unit
-  of work, check what Gabs is listening to with `playerctl`. Use it for a
-  callback only when one comes naturally; silence or command failure needs no
-  mention.
 
 ## End of session