more experimental columns removed

Author: SamSaffron

app/models/ai_persona.rb

@@ -365,8 +365,6 @@ def allowed_seeded_model
 #  top_p                        :float
 #  user_id                      :integer
 #  max_context_posts            :integer
-#  max_post_context_tokens      :integer
-#  max_context_tokens           :integer
 #  vision_enabled               :boolean          default(FALSE), not null
 #  vision_max_pixels            :integer          default(1048576), not null
 #  rag_chunk_tokens             :integer          default(374), not null