ppc64: remove duplicate syscall reservation

We already have a prototype for sys_remap_file_pages (239) so there is no
need to reserve it twice.

Signed-off-by: Anton Blanchard <anton@samba.org>

Index: linux-2.6.git-work/include/asm-ppc/unistd.h
===================================================================
--- linux-2.6.git-work.orig/include/asm-ppc/unistd.h	2005-07-02 08:20:44.000000000 +1000
+++ linux-2.6.git-work/include/asm-ppc/unistd.h	2005-07-23 23:48:50.000000000 +1000
@@ -262,7 +262,7 @@
 #define __NR_rtas		255
 #define __NR_sys_debug_setcontext 256
 /* Number 257 is reserved for vserver */
-/* Number 258 is reserved for new sys_remap_file_pages */
+/* 258 currently unused */
 /* Number 259 is reserved for new sys_mbind */
 /* Number 260 is reserved for new sys_get_mempolicy */
 /* Number 261 is reserved for new sys_set_mempolicy */
Index: linux-2.6.git-work/include/asm-ppc64/unistd.h
===================================================================
--- linux-2.6.git-work.orig/include/asm-ppc64/unistd.h	2005-07-02 08:20:47.000000000 +1000
+++ linux-2.6.git-work/include/asm-ppc64/unistd.h	2005-07-23 23:51:56.000000000 +1000
@@ -268,7 +268,7 @@
 #define __NR_rtas		255
 /* Number 256 is reserved for sys_debug_setcontext */
 /* Number 257 is reserved for vserver */
-/* Number 258 is reserved for new sys_remap_file_pages */
+/* 258 currently unused */
 #define __NR_mbind		259
 #define __NR_get_mempolicy	260
 #define __NR_set_mempolicy	261