[WCNCR00146539] p2p: remove and refine unused p2p files and code

[Description]
Refacotor p2p related files and code
1. Remove unused p2p code and files
2. Rename some p2p FSM functions
3. Move some p2p functions used by both p2p role and p2p dev
   into p2p_fsm.c files

Change-Id: I021618684ecd3a4cd3d2866f716213f3f8309c86
Feature: p2p
Signed-off-by: Awk Jiang <awk.jiang@mediatek.com>
CR-Id: WCNCR00146539
12 files changed