simplify things (#7735)

model/authorize.go

@@ -155,10 +155,5 @@ func AuthorizeRequestFromJson(data io.Reader) *AuthorizeRequest {
 }
 
 func (ad *AuthData) IsExpired() bool {
-
-	if GetMillis() > ad.CreateAt+int64(ad.ExpiresIn*1000) {
-		return true
-	}
-
-	return false
+	return GetMillis() > ad.CreateAt+int64(ad.ExpiresIn*1000)
 }