Remove option no longer needed now that we don't use gtest.

diff --git a/configure.py b/configure.py
index 48da08a..2eacbfe 100755 (executable)
--- a/configure.py
+++ b/configure.py
@@ -291,7 +291,6 @@ if platform.is_msvc():
               # We never have strings or arrays larger than 2**31.
               '/wd4267',
               '/DNOMINMAX', '/D_CRT_SECURE_NO_WARNINGS',
-              '/D_VARIADIC_MAX=10',
               '/DNINJA_PYTHON="%s"' % options.with_python]
     if options.bootstrap:
         # In bootstrap mode, we have no ninja process to catch /showIncludes