refactor: remove unuse code

shared/utils/event-bus.ts

@@ -1,30 +0,0 @@
-/**
- * 独立事件分发工具类
- *
- * @example
- * const event = new EventBus();
- * event.on(() => {
- *   console.log('trigger')
- * })
- * event.fire();
- */
-export class EventBus<Args extends unknown[] = []> {
-  listeners: ((...args: Args) => void)[] = [];
-
-  fire(...args: Args) {
-    this.listeners.forEach((fn) => {
-      fn(...args);
-    });
-  }
-
-  on(fn: (...args: Args) => void) {
-    this.listeners.push(fn);
-  }
-
-  off(fn: (...args: Args) => void) {
-    const index = this.listeners.indexOf(fn);
-    if (index >= 0) {
-      this.listeners.splice(index, 1);
-    }
-  }
-}