Use soong-built vintf/manifest.xml file

vintf/manifest.xml is available in soong. Replace the prebuilt
manifest.xml file with the one that is built from soong.

Bug: 340427295
Bug: 376349660
Test: cat system/etc/vintf/manifest.xml
Change-Id: I441a03f7cfe874d692b79ac79b690be33bb430bd