Revert "Give NullabilityKind a printing operator<<"

This reverts commit 0a532207b8696d81e46017f444bd2257347f129b.

This breaks several of our tests. Have given reproducers to author.
Reverting this until author can fix the issue.

1 files changed, 0 insertions, 14 deletions

diff --git a/clang/lib/Basic/IdentifierTable.cpp b/clang/lib/Basic/IdentifierTable.cpp
index 9be42c0..97dc5cd 100644
--- a/clang/lib/Basic/IdentifierTable.cpp
+++ b/clang/lib/Basic/IdentifierTable.cpp
@@ -849,20 +849,6 @@ StringRef clang::getNullabilitySpelling(NullabilityKind kind,
   llvm_unreachable("Unknown nullability kind.");
 }
 
-llvm::raw_ostream &operator<<(llvm::raw_ostream &OS, NullabilityKind NK) {
-  switch (NK) {
-  case NullabilityKind::NonNull:
-    return OS << "NonNull";
-  case NullabilityKind::Nullable:
-    return OS << "Nullable";
-  case NullabilityKind::NullableResult:
-    return OS << "NullableResult";
-  case NullabilityKind::Unspecified:
-    return OS << "Unspecified";
-  }
-  llvm_unreachable("Unknown nullability kind.");
-}
-
 diag::kind
 IdentifierTable::getFutureCompatDiagKind(const IdentifierInfo &II,
                                          const LangOptions &LangOpts) {