hppa: fix stat64 and fstat64 decoding

* file.c [HPPA]: Do not redefine stat64 to hpux_stat64.
diff --git a/file.c b/file.c
index 9464467..e5fc259 100644
--- a/file.c
+++ b/file.c
@@ -171,9 +171,6 @@
 # define loff_t loff_t
 #endif
 
-#ifdef HPPA	/* asm-parisc/stat.h defines stat64 */
-# undef stat64
-#endif
 #define stat libc_stat
 #define stat64 libc_stat64
 #include <sys/stat.h>
@@ -183,9 +180,6 @@
 #undef st_atime
 #undef st_mtime
 #undef st_ctime
-#ifdef HPPA
-# define stat64 hpux_stat64
-#endif
 
 #include <fcntl.h>
 #ifdef HAVE_SYS_VFS_H