Revert "[BPF] do not generate unused local/global types"

This reverts commit r356232.

Reason: test failure with ASSERT on enabled build.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@356233 91177308-0d34-0410-b5e6-96231b3b80d8
4 files changed