Do not follow deps for apex_vndk

Since apex_vndk deals with its own dependencies, it should not follow
dependencies while packaging.

Bug: 139772411
Test: TARGET_VNDK_USE_CORE_VARIANT=true m com.android.vndk.current
      see if there are unexpected libs in the apex
      for example, android.hardware.audio.common@2.0.so should not be
      included in the apex since it is not listed as "must use vendor
      variant".

Change-Id: Ibada600b3099fb19630d1e327a2e09cd26b2deb0