[IMP] mail: remove qunitTest field from message model

Since createMessageComponent helper is gone, the qunitTest field
of the message model is unused. Let's remove it.

closes odoo/odoo#94676

Signed-off-by: Sébastien Theys (seb) <seb@odoo.com>

addons/mail/static/tests/models/message_view_qunit_tests.js

@@ -1,17 +0,0 @@
-/** @odoo-module **/
-
-import { addFields, patchIdentifyingFields } from '@mail/model/model_core';
-import { one } from '@mail/model/model_field';
-// ensure that the model definition is loaded before the patch
-import '@mail/models/message_view';
-
-addFields('MessageView', {
-    qunitTest: one('QUnitTest', {
-        inverse: 'messageView',
-        readonly: true,
-    }),
-});
-
-patchIdentifyingFields('MessageView', identifyingFields => {
-    identifyingFields[0].push('qunitTest');
-});

addons/mail/static/tests/models/qunit_test.js

@@ -22,10 +22,6 @@ registerModel({
             inverse: 'qunitTest',
             isCausal: true,
         }),
-        messageView: one('MessageView', {
-            inverse: 'qunitTest',
-            isCausal: true,
-        }),
         notificationListView: one('NotificationListView', {
             inverse: 'qunitTestOwner',
             isCausal: true,