Revert "Set VNDK version to current for module builds"

This reverts commit af35677f.

Bug: 185769808
Test: banchan com.android.media.swcodec module_arm64; m apps_only dist
Test: banchan com.android.media.swcodec aosp_arm64; m apps_only dist

In both cases, the built APEX doesn't have libsync.so in it.
apex_manifest.pb has libsync.so as requireNativeLibs.

Change-Id: I62397d50a6970a9316f0d6ddd36736f149bc7c2c