Kill -faddress-sanitizer, -fthread-sanitizer and -fcatch-undefined-behavior flags.

These flags are deprecated since at least Clang 3.3. Users should instead
use -fsanitize= with appropriate values.

llvm-svn: 204330
diff --git a/clang/lib/Driver/Tools.cpp b/clang/lib/Driver/Tools.cpp
index f808a18..393f4b4 100644
--- a/clang/lib/Driver/Tools.cpp
+++ b/clang/lib/Driver/Tools.cpp
@@ -3137,8 +3137,7 @@
                     true))
     CmdArgs.push_back("-fno-sanitize-recover");
 
-  if (Args.hasArg(options::OPT_fcatch_undefined_behavior) ||
-      Args.hasFlag(options::OPT_fsanitize_undefined_trap_on_error,
+  if (Args.hasFlag(options::OPT_fsanitize_undefined_trap_on_error,
                    options::OPT_fno_sanitize_undefined_trap_on_error, false))
     CmdArgs.push_back("-fsanitize-undefined-trap-on-error");