docs(gepa): remove discouraging recommendation from custom proposer section

Users reading this section want to learn how to implement custom proposers for ReAct - don't discourage them from doing so

Author: Ju-usc

docs/docs/api/optimizers/GEPA/GEPA_Advanced.md

@@ -731,8 +731,6 @@ for tool_name, tool in optimized_agent.tools.items():
 - GEPA still does discovery and JSON serialization, but YOU handle the optimization logic
 - ReAct components are passed with keys like `"react_module"` or `"react_module:agent_name"`
 
-**Recommendation:** For most use cases, don't provide a custom `instruction_proposer` when using ReAct modules. Let GEPA use the specialized `ReActModuleProposer` which jointly optimizes all 4 ReAct components.
-
 #### Implementing a Custom Proposer for ReAct
 
 If you need custom logic, you must handle ReAct components yourself. ReAct components are stored as JSON strings containing all 4 parts: