fix compilation of linuxthreads for sparc64

Signed-off-by: Austin Foxley <austinf@cetoncorp.com>

libpthread/linuxthreads/sysdeps/unix/sysv/linux/sparc/fork.h

@@ -17,7 +17,5 @@
    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    02111-1307 USA.  */
 
-#include <sysdep.h>
-
 #include_next <fork.h>
 

libpthread/linuxthreads/sysdeps/unix/sysv/linux/sparc/sparc64/sysdep-cancel.h

@@ -17,7 +17,6 @@
    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    02111-1307 USA.  */
 
-#include <sysdep.h>
 #include <tls.h>
 #ifndef __ASSEMBLER__
 # include <linuxthreads/internals.h>