Drop a bunch of #ifdef Lynx.

Xext/mbuf.c

@@ -47,7 +47,7 @@ in this Software without prior written authorization from The Open Group.
 #include <X11/extensions/multibufst.h>
 
 #include <stdio.h>
-#if !defined(WIN32) && !defined(Lynx)
+#if !defined(WIN32)
 #include <sys/time.h>
 #endif
 

Xext/shm.c

@@ -34,13 +34,8 @@ in this Software without prior written authorization from The Open Group.
 #endif
 
 #include <sys/types.h>
-#ifndef Lynx
 #include <sys/ipc.h>
 #include <sys/shm.h>
-#else
-#include <ipc.h>
-#include <shm.h>
-#endif
 #include <unistd.h>
 #include <sys/stat.h>
 #define NEED_REPLIES

Xext/sync.c

@@ -72,7 +72,7 @@ PERFORMANCE OF THIS SOFTWARE.
 #include <X11/extensions/syncstr.h>
 
 #include <stdio.h>
-#if !defined(WIN32) && !defined(Lynx)
+#if !defined(WIN32)
 #include <sys/time.h>
 #endif
 

Xext/xvmc.c

@@ -24,14 +24,9 @@
 #include "xvmcext.h"
 
 #ifdef HAS_XVMCSHM
-#ifndef Lynx
 #include <sys/ipc.h>
 #include <sys/types.h>
 #include <sys/shm.h>
-#else
-#include <ipc.h>
-#include <shm.h>
-#endif /* Lynx */
 #endif /* HAS_XVMCSHM */