--- xnu/xnu-344.26/libkern/c++/OSNumber.cpp
+++ xnu/xnu-201.19/libkern/c++/OSNumber.cpp
@@ -21,12 +21,6 @@
  */
 /* IOOffset.m created by rsulack on Wed 17-Sep-1997 */
 
-#include <sys/cdefs.h>
-
-__BEGIN_DECLS
-extern int sscanf(const char *input, const char *fmt, ...);
-__END_DECLS
-
 #include <libkern/c++/OSNumber.h>
 #include <libkern/c++/OSString.h>
 #include <libkern/c++/OSSerialize.h>
@@ -37,7 +31,6 @@
 #define super OSObject
 
 OSDefineMetaClassAndStructors(OSNumber, OSObject)
-
 OSMetaClassDefineReservedUnused(OSNumber, 0);
 OSMetaClassDefineReservedUnused(OSNumber, 1);
 OSMetaClassDefineReservedUnused(OSNumber, 2);