Revert "Quote the comma for -uall,extralargefile"

This reverts commit c411e35.

Author: ambv

master/custom/factories.py

@@ -625,7 +625,7 @@ class Windows64Build(BaseWindowsBuild):
 class Windows64BigmemBuild(BaseWindowsBuild):
     buildersuffix = ".bigmem"
     buildFlags = ["-p", "x64"]
-    testFlags = ["-p", "x64", "-M33g", '"-uall,extralargefile"']
+    testFlags = ["-p", "x64", "-M33g", "-uall,extralargefile"]
     test_timeout = TEST_TIMEOUT * 4
     cleanFlags = ["-p", "x64"]
     factory_tags = ["win64", "bigmem"]