<viro> dwmw2: anyway, removing sgid from directories or from
       files without S_IXGRP is a plain and simple bug
<viro> these days you don't need that logics at all - simply remove it
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
        ri->gid = cpu_to_je16((ivalid & ATTR_GID)?iattr->ia_gid:inode->i_gid);
 
        if (ivalid & ATTR_MODE)
-               if (iattr->ia_mode & S_ISGID &&
-                   !in_group_p(je16_to_cpu(ri->gid)) && !capable(CAP_FSETID))
-                       ri->mode = cpu_to_jemode(iattr->ia_mode & ~S_ISGID);
-               else
-                       ri->mode = cpu_to_jemode(iattr->ia_mode);
+               ri->mode = cpu_to_jemode(iattr->ia_mode);
        else
                ri->mode = cpu_to_jemode(inode->i_mode);