configure: Remove checks for headers that are no longer used.

configure

@@ -6060,8 +6060,6 @@ done
 
 
 
-
-
 for ac_header in \
 	AudioUnit/AudioUnit.h \
 	Carbon/Carbon.h \
@@ -6149,7 +6147,6 @@ for ac_header in \
 	sys/ipc.h \
 	sys/limits.h \
 	sys/link.h \
-	sys/lwp.h \
 	sys/mman.h \
 	sys/modem.h \
 	sys/msg.h \
@@ -6159,7 +6156,6 @@ for ac_header in \
 	sys/prctl.h \
 	sys/protosw.h \
 	sys/ptrace.h \
-	sys/reg.h \
 	sys/resource.h \
 	sys/scsiio.h \
 	sys/shm.h \

configure.ac

@@ -325,7 +325,6 @@ AC_CHECK_HEADERS(\
 	sys/ipc.h \
 	sys/limits.h \
 	sys/link.h \
-	sys/lwp.h \
 	sys/mman.h \
 	sys/modem.h \
 	sys/msg.h \
@@ -335,7 +334,6 @@ AC_CHECK_HEADERS(\
 	sys/prctl.h \
 	sys/protosw.h \
 	sys/ptrace.h \
-	sys/reg.h \
 	sys/resource.h \
 	sys/scsiio.h \
 	sys/shm.h \

include/config.h.in

@@ -837,9 +837,6 @@
 /* Define to 1 if you have the <sys/link.h> header file. */
 #undef HAVE_SYS_LINK_H
 
-/* Define to 1 if you have the <sys/lwp.h> header file. */
-#undef HAVE_SYS_LWP_H
-
 /* Define to 1 if you have the <sys/mman.h> header file. */
 #undef HAVE_SYS_MMAN_H
 
@@ -870,9 +867,6 @@
 /* Define to 1 if you have the <sys/ptrace.h> header file. */
 #undef HAVE_SYS_PTRACE_H
 
-/* Define to 1 if you have the <sys/reg.h> header file. */
-#undef HAVE_SYS_REG_H
-
 /* Define to 1 if you have the <sys/resource.h> header file. */
 #undef HAVE_SYS_RESOURCE_H