整理媒体事件相关代码，删除无须重载时的多余代码逻辑

src/Player/PlayerProxy.cpp

@@ -185,10 +185,6 @@ std::shared_ptr<SockInfo> PlayerProxy::getOriginSock(MediaSource &sender) const
     return getSockInfo();
 }
 
-toolkit::EventPoller::Ptr PlayerProxy::getOwnerPoller(MediaSource &sender) {
-    return getPoller();
-}
-
 void PlayerProxy::onPlaySuccess() {
     GET_CONFIG(bool, reset_when_replay, General::kResetWhenRePlay);
     if (dynamic_pointer_cast<RtspMediaSource>(_media_src)) {

src/Player/PlayerProxy.h

@@ -59,7 +59,6 @@ private:
     MediaOriginType getOriginType(MediaSource &sender) const override;
     std::string getOriginUrl(MediaSource &sender) const override;
     std::shared_ptr<toolkit::SockInfo> getOriginSock(MediaSource &sender) const override;
-    toolkit::EventPoller::Ptr getOwnerPoller(MediaSource &sender) override;
 
     void rePlay(const std::string &strUrl,int iFailedCnt);
     void onPlaySuccess();