bpo-35947: Update Windows to the current version of libffi (GH-11797)
We now use a pre-built libffi binary from our binaries repository, and no longer vendor the full implementation.
diff --git a/PC/layout/main.py b/PC/layout/main.py
index 910085c..185e649 100644
--- a/PC/layout/main.py
+++ b/PC/layout/main.py
@@ -52,7 +52,7 @@
EXCLUDE_FROM_COMPILE = FileNameSet("badsyntax_*", "bad_*")
EXCLUDE_FROM_CATALOG = FileSuffixSet(".exe", ".pyd", ".dll")
-REQUIRED_DLLS = FileStemSet("libcrypto*", "libssl*")
+REQUIRED_DLLS = FileStemSet("libcrypto*", "libssl*", "libffi*")
LIB2TO3_GRAMMAR_FILES = FileNameSet("Grammar.txt", "PatternGrammar.txt")