FIX: summarize is not working remove for now (#661)

Summarize is not working right, remove it for now.

Also it was specified twice breaking tool calls.

Author: SamSaffron

lib/ai_bot/personas/persona.rb

@@ -77,11 +77,9 @@ def all_available_tools
               Tools::ListCategories,
               Tools::Time,
               Tools::Search,
-              Tools::Summarize,
               Tools::Read,
               Tools::DbSchema,
               Tools::SearchSettings,
-              Tools::Summarize,
               Tools::SettingContext,
               Tools::RandomPicker,
               Tools::DiscourseMetaSearch,