remove cancelAllNotifications resolver

schema.graphqls

@@ -69,7 +69,6 @@ type Query {
 type Mutation {
   scheduleNotification(input: NotificationInput): NotificationResponse
   cancelNotification(input: NotificationInput): NotificationResponse
-  cancelAllNotifications(deviceId: ID!): NotificationResponse
 }
 
 input NotificationInput {

src/resolvers/MutationResolvers.ts

@@ -17,12 +17,5 @@ export const MutationResolvers: Resolvers<ServerContext> = {
       }
       return response;
     },
-    cancelAllNotifications: async (_parent, args, context, _info) => {
-      const response: NotificationResponse = {
-        message: "Not implemented",
-        success: false
-      }
-      return response;
-    },
   },
 }