Try this

<delete model="ir.ui.menu" id="project.menu_action_view_task" />

Hi Prince. Make sure Technical Features is checked on for your user. Then go under Settings/Technical/User Interface/Menu Items and search for the item you want to delete (e.g. "Vouchers"). Once you find it, you can use the More menu to Delete it.

I hope this helps!

Please don't delete any menus.

my suggestion is Deactive the menu from Settings/Technical/User Interface/Menu Items this.
If you do like this in future you can enable it

Try this

class ir_ui_menu(models.Model):

inherit = 'ir.ui.menu'
_description = "ir.ui.menu"
active = fields.Boolean(string='Active', default=True)


in a file Xml
<record model ="ir.ui.menu" id="yourmodel.your_menu_ithem_id">

<field name="active" eval="False"/>
</record>
Or :
<record model ="ir.ui.menu" id="yourmodel.your_menu_ithem_id">
    <field name="groups_id" eval="[(3,ref('base.group_user'))]"/>

</record>