Revert "ext4: don't clear SB_RDONLY when remounting r/w until quota is re-enabled"

commit 1b292439 upstream.

This reverts commit a44be64b

.

Link: https://lore.kernel.org/r/653b3359-2005-21b1-039d-c55ca4cffdcc@gmail.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>