Remove Diagnostic's get/setNumErrors() and getNumErrorsSuppressed().

Anyone wanting to use it should probably use DiagnosticClient's getNumErrors() instead.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@119766 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed