MOBILE-4362 notes: Update error string to reflect delete action

src/addons/notes/lang.json

@@ -10,5 +10,5 @@
     "personalnotes": "Personal notes",
     "publishstate": "Context",
     "sitenotes": "Site notes",
-    "warningnotenotsent": "Couldn't add note(s) to course {{course}}. {{error}}"
+    "warningnotenotsent": "Couldn't add or delete note(s). {{error}}"
 }

src/addons/notes/services/notes-sync.ts

@@ -231,7 +231,7 @@ export class AddonNotesSyncProvider extends CoreSyncBaseProvider<AddonNotesSyncR
 
             result.warnings = errors.map((error) =>
                 Translate.instant('addon.notes.warningnotenotsent', {
-                    course: 'fullname' in course ? course.fullname : courseId,
+                    course: 'fullname' in course ? course.fullname : courseId, // @deprecated since 4.3.
                     error: error,
                 }));
         }