Remove 买点 (user acquisition tracking) subsystem

Delete the dataReport SDK, event storage model, and scheduled uploader,
along with the reportser/srv_report wrapper services and all ~20 Report*
call sites in business code. Also drop the ReportSDKConfig field from
the APP config response, the TrackerAppId helper, and the related
dataReport yaml config block.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

app/appg/appg.go

@@ -109,9 +109,6 @@ type GlobalCfgEx struct {
 		AppCode      string `yaml:"appCode"`      // 应用 code
 		AesKey       string `yaml:"aesKey"`       // 数据解密KEY
 	} `yaml:"adCenter"`
-	DataReport struct {
-		Url string `yaml:"url"`
-	} `yaml:"dataReport"`
 	LsjMediaConf struct {
 		AppId            string `yaml:"appId"`
 		ApiKey           string `yaml:"apiKey"`