ext4: remove unnecessary selections from EXT3_FS

Since EXT3_FS already selects EXT4_FS, there's no reason for it to
redundantly select all the selections of EXT4_FS -- notwithstanding the
comments that claim otherwise.

Remove these redundant selections to avoid confusion.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Link: https://lore.kernel.org/r/20191226153920.4466-1-ebiggers@kernel.org


Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Jan Kara <jack@suse.cz>