Remove CPU variant from ABI reference dump paths

This commit removes CPU variant from the paths under prebuilts/abi-dumps
so that the build system can find dumps generated from non-generic
products.

Bug: 140359871
Test: ./create_reference_dumps.py -product aosp_cf_arm64_phone \
      -libs libvndksupport

Change-Id: Ib022bbfd484e327e345b554cdfd41a48692a3c68
2 files changed