Removing Carbon dependency by removing obsolete code.
The only part using Carbon is a function in Host.mm used to open a file in Xcode.
That code is broken and it is no longer useful as Xcode supports LLDB natively.



git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@212208 91177308-0d34-0410-b5e6-96231b3b80d8