Remove AIDL modules from VndkMustUseVendorVariantList

Vendor variants of AIDL-gen CC modules are by default different from
core variants. So instead of adding them manually to the list, AIDL
builder can mark them as MustUseVendorVariant.

Bug: 233616647
Test: m
Merged-In: Ifca0eb64d60ecb49d72cd0347336b69fb332c58c
Change-Id: Ifca0eb64d60ecb49d72cd0347336b69fb332c58c