Remove libselinux_vendor

libselinux_vendor is removed and merged to libselinux by using
vendor_available:true.

Bug: 66914194
Test: lunch aosp_arm64_ab-userdebug; m libselinux.vendor

Change-Id: Idc04eccf8a9803b9acf6277a9d078a1528ed29c9
2 files changed