[IMP] mail: convert activity LegacyComponent to Component

part of task-2783065

closes odoo/odoo#102336

Related: odoo/enterprise#32360
Signed-off-by: Louis Wicket (wil) <wil@odoo.com>

addons/mail/static/src/components/activity/activity.js

@@ -1,20 +1,19 @@
 /** @odoo-module **/
 
-import { useComponentToModel } from '@mail/component_hooks/use_component_to_model';
 import { useRefToModel } from '@mail/component_hooks/use_ref_to_model';
 import { registerMessagingComponent } from '@mail/utils/messaging_component';
 
 import Popover from "web.Popover";
-import { LegacyComponent } from "@web/legacy/legacy_component";
 
-export class Activity extends LegacyComponent {
+const { Component } = owl;
+
+export class Activity extends Component {
 
     /**
      * @override
      */
      setup() {
         super.setup();
-        useComponentToModel({ fieldName: 'component' });
         useRefToModel({ fieldName: 'markDoneButtonRef', refName: 'markDoneButton', });
     }
 

addons/mail/static/src/models/activity_view.js

@@ -101,10 +101,6 @@ registerModel({
             },
             inverse: 'activityViewOwner',
         }),
-        /**
-         * States the OWL component of this activity view.
-         */
-        component: attr(),
         /**
          * Compute the label for "when" the activity is due.
          */