docs: remove fork AI feature description line from README

Author: LeanBitLab

README.md

@@ -10,8 +10,6 @@
 
 **LeanType** is a fork of [HeliBoard](https://github.com/Helium314/HeliBoard) - a privacy-conscious and customizable open-source keyboard based on AOSP/OpenBoard.
 
-This fork adds **optional AI-powered features** using Gemini, Groq, and OpenAI-compatible APIs, offering a hybrid experience: a private, offline core with opt-in cloud intelligence.
-
 
 
 ## What's New in LeanType