Bitcode: Remove the remnants of the BitcodeDiagnosticInfo class.

The BitcodeReader no longer produces BitcodeDiagnosticInfo diagnostics.
The only remaining reference was in the gold plugin; the code there has been
dead since we stopped producing InvalidBitcodeSignature error codes in r225562.
While at it remove the InvalidBitcodeSignature error code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@286326 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 0 insertions, 6 deletions

diff --git a/tools/gold/gold-plugin.cpp b/tools/gold/gold-plugin.cpp
index 7c5d48144b2a..22386780be92 100644
--- a/tools/gold/gold-plugin.cpp
+++ b/tools/gold/gold-plugin.cpp
@@ -368,12 +368,6 @@ ld_plugin_status onload(ld_plugin_tv *tv) {
 }
 
 static void diagnosticHandler(const DiagnosticInfo &DI) {
-  if (const auto *BDI = dyn_cast<BitcodeDiagnosticInfo>(&DI)) {
-    std::error_code EC = BDI->getError();
-    if (EC == BitcodeError::InvalidBitcodeSignature)
-      return;
-  }
-
   std::string ErrStorage;
   {
     raw_string_ostream OS(ErrStorage);