Revert "[lldb] Filter DIEs based on qualified name where possible"

This reverts commit befa77e59a7760d8c4fdd177b234e4a59500f61c.

Looks like this broke a SymbolFileNativePDB test. I'll investigate and
resubmit with a fix soon.

GitOrigin-RevId: 967df65a3610f98a3bc0ec0f2303641d7bad176c
31 files changed