feat: able to delete all manually disabled channels (close #539)

model/channel.go

@@ -176,3 +176,8 @@ func updateChannelUsedQuota(id int, quota int) {
 		common.SysError("failed to update channel used quota: " + err.Error())
 	}
 }
+
+func DeleteChannelByStatus(status int64) (int64, error) {
+	result := DB.Where("status = ?", status).Delete(&Channel{})
+	return result.RowsAffected, result.Error
+}