refactored: removed some functions from vp

i will implement these later but not now

src/core/VideoPlayer.ts

@@ -21,8 +21,4 @@ export class VP {
     this.videoElement = document.querySelector(video);
     this.videoSources = this.videoElement?.querySelectorAll("source");
   }
-
-  private adapters(): void {}
-  private ui(): void {}
-  private plugins(): void {}
 }