It makes no sense to link vmlinuz and initramfs to the root directory

[kindusmith <meiguozhichun@gmail.com>]

In early Unix, boot and vmunix were both stored in the root directory as 
programs, and boot was used to start vmunix. Debian inherited this for 
compatibility, but the situation has changed a lot. Today, boot is 
stored in the root directory as a directory, which already contains the 
kernel files vmlinuz and initramfs. Therefore, it makes no sense to link 
vmlinuz and initamfs to the root directory, so the best way is to remove 
them from the root directory.