Rip out flags for controlling C++ "production mode" separately.

This is old leftover cruft from the days when C++ was not yet ready
for prime time.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@141063 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/driver/driver.cpp b/tools/driver/driver.cpp
index b9268df..bd1d2a2 100644
--- a/tools/driver/driver.cpp
+++ b/tools/driver/driver.cpp
@@ -379,18 +379,11 @@
 
 #ifdef CLANG_IS_PRODUCTION
   const bool IsProduction = true;
-#  ifdef CLANGXX_IS_PRODUCTION
-  const bool CXXIsProduction = true;
-#  else
-  const bool CXXIsProduction = false;
-#  endif
 #else
   const bool IsProduction = false;
-  const bool CXXIsProduction = false;
 #endif
   Driver TheDriver(Path.str(), llvm::sys::getHostTriple(),
-                   "a.out", IsProduction, CXXIsProduction,
-                   Diags);
+                   "a.out", IsProduction, Diags);
 
   // Attempt to find the original path used to invoke the driver, to determine
   // the installed path. We do this manually, because we want to support that