Revert "Build sepolicy files for microdroid_vendor"

Revert submission 1609095-microdroid_vendor

Reason for revert: Breaks aosp_x86_64-userdebug build
Reverted Changes:
I82a66a00a:Add microdroid_vendor
I88eec6e1f:Build sepolicy files for microdroid_vendor

Bug: 180986662
Fixes: 181756343
Change-Id: Ie390d17ee99bae83fb98baaa3c3a1ca8d95c3919
1 file changed