Revert "Temporarily pin tests to DWARF v2 until a more recent version of LLDB"

This reverts commit 319790.

We worked around the bug in LLVM instead.

llvm-svn: 320076
GitOrigin-RevId: a0de3a8d0a27c7b94f91d4bf43e20c1166d4fdb9
5 files changed