[Frontend] Avoid creating auxilary files during a unit test. NFC

A test added in r363009 logs diagnostics into a file inside current
working directory. This breaks when the directory is not writable.

This looks like a debugging output in the first place, the test passes
without it anyway.

llvm-svn: 363041

1 files changed, 0 insertions, 1 deletions

diff --git a/clang/unittests/Frontend/CompilerInstanceTest.cpp b/clang/unittests/Frontend/CompilerInstanceTest.cpp
index 3ef13d32ca4..3b3dc527df5 100644
--- a/clang/unittests/Frontend/CompilerInstanceTest.cpp
+++ b/clang/unittests/Frontend/CompilerInstanceTest.cpp
@@ -73,7 +73,6 @@ TEST(CompilerInstance, DefaultVFSOverlayFromInvocation) {
 
 TEST(CompilerInstance, AllowDiagnosticLogWithUnownedDiagnosticConsumer) {
   auto DiagOpts = new DiagnosticOptions();
-  DiagOpts->DiagnosticLogFile = "log.diags";
 
   // Create the diagnostic engine with unowned consumer.
   std::string DiagnosticOutput;