liblzma: Remove unneeded <sys/types.h> from fastpos_tablegen.c.

This file only generates fastpos_table.c.
It isn't built as a part of liblzma.

src/liblzma/lzma/fastpos_tablegen.c

@@ -11,7 +11,6 @@
 //
 ///////////////////////////////////////////////////////////////////////////////
 
-#include <sys/types.h>
 #include <inttypes.h>
 #include <stdio.h>
 #include "fastpos.h"