Remove more Lynx leftovers

A couple #if defined(Lynx) && defined(sun) had become just if defined(sun),
resulting in wrong settings for Solaris builds, so they're now just deleted.

hw/xfree86/loader/loader.c

@@ -76,11 +76,6 @@
 #include "compiler.h"
 #include "sym.h"
 
-#if defined(sun)
-/* Cross build machine doesn;t have strerror() */
-#define strerror(err) "strerror unsupported"
-#endif
-
 /*
  * handles are used to identify files that are loaded. Even archives
  * are counted as a single file.

hw/xfree86/loader/loader.h

@@ -53,9 +53,6 @@
 #ifndef _LOADER_H
 #define _LOADER_H
 
-#if defined(sun)
-#define const /**/
-#endif
 #include <X11/Xosdefs.h>
 #include <X11/Xfuncproto.h>
 #include <X11/Xmd.h>