prune required MinimalChannelInterface

Author: yaacovCR

src/__testUtils__/diagnosticsTestUtils.ts

@@ -65,11 +65,6 @@ export async function expectNoTracingActivity<T>(
   fn: () => T | Promise<T>,
 ): Promise<Awaited<T>> {
   expect(channel.hasSubscribers).to.equal(false);
-  expect(channel.start.hasSubscribers).to.equal(false);
-  expect(channel.end.hasSubscribers).to.equal(false);
-  expect(channel.asyncStart.hasSubscribers).to.equal(false);
-  expect(channel.asyncEnd.hasSubscribers).to.equal(false);
-  expect(channel.error.hasSubscribers).to.equal(false);
 
   const calls: Array<string> = [];
   const restore: Array<() => void> = [];

src/diagnostics.ts

@@ -20,7 +20,6 @@ import { isPromise } from './jsutils/isPromise.js';
  * @internal
  */
 export interface MinimalChannel {
-  readonly hasSubscribers: boolean;
   publish: (message: unknown) => void;
   runStores: <T, ContextType extends object>(
     context: ContextType,