feat: add support for mamba cp

Signed-off-by: Mehant Kammakomati <mehant.kammakomati2@ibm.com>

Author: kmehant

tuning/config/acceleration_configs/mcp.py

@@ -25,7 +25,6 @@
 class MCP:
     degree: int = None
     mamba_impl: str = None
-    attn_impl: str = None
     mamba_recompute: bool = None