[FIX] product_expiry: changed removal date visibility on inventory report

1) removal_date in inventory report should be readonly if
product tracking is none or use_expiration_date of product
is false.

2) removal_date should be editable in inventory mode.

Fixes-2273732

closes odoo/odoo#52827

Signed-off-by: Simon Lejeune (sle) <sle@openerp.com>