PGO] Drop consecutive-zeros.ll test
pgo-memop-opt has previously validated VP metadata and bailed if it runs
into duplicate values in the VP metadata. VP metadata values will soon
be deduplicated at construction, making this no longer necessary, and
will also cause this test to fail, so drop it. Keep the
verification/deduplication pgo-memop-opt for now to avoid leaving main
in a broken state.
Reviewers: mtrofin, ormris
Pull Request: https://github.com/llvm/llvm-project/pull/197615
