LLDB: Use LLVM's type for minidump ExceptionStream [NFC]

Summary: The types defined for it in LLDB are now redundant with core types.

Reviewers: labath, clayborg

Reviewed By: clayborg

Subscribers: lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D68658

git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@375243 91177308-0d34-0410-b5e6-96231b3b80d8
7 files changed