Don't apply path enforcements for non-full builds.

The installed files lists are wildly inaccurate unless all the
makefiles in the tree have been parsed, so the "redundant whitelist"
computation will be too trigger-happy in this case.

Bug: 111757442
Test: mmm -j system/extras/partition_tools
Test: m out/target/product/generic_arm64/offending-artifacts.txt
Change-Id: Id3a9f61d2366de77cdedf9cb1e4e39f7d18ade6f