[ALPS04840835] Remove all vendor sepolicy for fastbootd

[Solution]
1. remove sepolicy for native partition erase permission
2. remove AB partition sepolicy, leave it to Google solution

MTK-Commit-Id: 0476e00269accaf247550928cc72c010f99787c1

Change-Id: I67ab4363307a69b5a94a0242c12750bc94670344
CR-Id: ALPS04840835
Feature: [Android Default] Fastboot