Remove INITARGS from recent xserver patches

INITARGS isn't used since Xorg 1.13, so remove it from our patches.
diff --git a/unix/xserver118.patch b/unix/xserver118.patch
index 286a37b..1c03317 100644
--- a/unix/xserver118.patch
+++ b/unix/xserver118.patch
@@ -65,7 +65,7 @@
  #include "globals.h"
  
 +#ifdef TIGERVNC
-+extern void vncExtensionInit(INITARGS);
++extern void vncExtensionInit(void);
 +#endif
 +
  /* The following is only a small first step towards run-time