[Clang][Cygwin] Remove erroneous define

mati865 · mati865 · commit a55831f96ac3 · 2025-04-08T20:59:01.000+02:00
diff --git a/clang/tools/libclang/CIndexer.cpp b/clang/tools/libclang/CIndexer.cpp
@@ -29,7 +29,6 @@
 #ifdef __CYGWIN__
 #include <cygwin/version.h>
 #include <sys/cygwin.h>
-#define _WIN32 1
 #endif
 
 #ifdef _WIN32
