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

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

git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@119766 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/clang,llvm-mirror/clang,llvm-mirror/clang,llvm-mirror/clang,apple/swift-clang,llvm-mirror/clang,llvm-mirror/clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,llvm-mirror/clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,llvm-mirror/clang,apple/swift-clang,llvm-mirror/clang,llvm-mirror/clang