tools: imx8mimage: remove redundant code

The align for fit_size has been done twice, remove the first one for it
does not make any sense.

Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Reviewed-by: Punit Agrawal <punit1.agrawal@toshiba.co.jp>
Reviewed-by: Tom Rini <trini@konsulko.com>
1 file changed