drop 2 dead entries: fstatat and newfstat

During Arnd's cleanup something went wrong and for a moment
(6.11-rc1 to 6.11-rc3) we had more entries than should be:

- fstatat is newfstatat
- newfstat is fstat

This change drops those dead entries.

data/syscall-names.text

@@ -95,7 +95,6 @@ fsopen
 fspick
 fstat
 fstat64
-fstatat
 fstatat64
 fstatfs
 fstatfs64
@@ -247,7 +246,6 @@ munlockall
 munmap
 name_to_handle_at
 nanosleep
-newfstat
 newfstatat
 nice
 old_adjtimex