chore(server): remove unused code (#30772)

chore(server): remove unnused code

server/test/utils.ts

@@ -553,43 +553,6 @@ export const mockDuplex =
     return duplex;
   };
 
-export const mockFork = vitest.fn((exitCode: number, stdout: string, stderr: string, error?: unknown) => {
-  const stdoutStream = new Readable({
-    read() {
-      this.push(stdout); // write mock data to stdout
-      this.push(null); // end stream
-    },
-  });
-
-  return {
-    stdout: stdoutStream,
-    stderr: new Readable({
-      read() {
-        this.push(stderr); // write mock data to stderr
-        this.push(null); // end stream
-      },
-    }),
-    stdin: new Writable({
-      write(chunk, encoding, callback) {
-        callback();
-      },
-    }),
-    exitCode,
-    on: vitest.fn((event, callback: any) => {
-      if (event === 'close') {
-        stdoutStream.once('end', () => callback(0));
-      }
-      if (event === 'error' && error) {
-        stdoutStream.once('end', () => callback(error));
-      }
-      if (event === 'exit') {
-        stdoutStream.once('end', () => callback(exitCode));
-      }
-    }),
-    kill: vitest.fn(),
-  } as unknown as ChildProcessWithoutNullStreams;
-});
-
 export async function* makeStream<T>(items: T[] = []): AsyncGenerator<T> {
   for (const item of items) {
     await Promise.resolve();