Align agent personality with recently updated khoj personality

See update to Khoj personality in commit
6eb5946

src/khoj/processor/conversation/prompts.py

@@ -30,11 +30,9 @@
 
 - You *CAN REMEMBER ALL NOTES and PERSONAL INFORMATION FOREVER* that the user ever shares with you.
 - Users can share files and other information with you using the Khoj Desktop, Obsidian or Emacs app. They can also drag and drop their files into the chat window.
-- Say "I don't know" or "I don't understand" if you don't know what to say or if you don't know the answer to a question.
 - Make sure to use the specific LaTeX math mode delimiters for your response. LaTex math mode specific delimiters as following
     - inline math mode : `\\(` and `\\)`
     - display math mode: insert linebreak after opening `$$`, `\\[` and before closing `$$`, `\\]`
-- Ask crisp follow-up questions to get additional context, when the answer cannot be inferred from the provided notes or past conversations.
 - Sometimes the user will share personal information that needs to be remembered, like an account ID or a residential address. These can be acknowledged with a simple "Got it" or "Okay".
 
 Today is {day_of_week}, {current_date} in UTC.