[WEEX-382] [iOS] rm useless log
[WEEX-382] [iOS] rm useless log

close #1189

miomin/incubator-weex,acton393/incubator-weex,erha19/incubator-weex,miomin/incubator-weex,alibaba/weex,miomin/incubator-weex,Hanks10100/incubator-weex,acton393/incubator-weex,erha19/incubator-weex,acton393/incubator-weex,miomin/incubator-weex,Hanks10100/incubator-weex,erha19/incubator-weex,acton393/incubator-weex,alibaba/weex,alibaba/weex,Hanks10100/incubator-weex,KalicyZhou/incubator-weex,erha19/incubator-weex,miomin/incubator-weex,erha19/incubator-weex,miomin/incubator-weex,acton393/incubator-weex,alibaba/weex,Hanks10100/incubator-weex,Hanks10100/incubator-weex,KalicyZhou/incubator-weex,KalicyZhou/incubator-weex,Hanks10100/incubator-weex,KalicyZhou/incubator-weex,miomin/incubator-weex,Hanks10100/incubator-weex,erha19/incubator-weex,acton393/incubator-weex,miomin/incubator-weex,KalicyZhou/incubator-weex,KalicyZhou/incubator-weex,erha19/incubator-weex,acton393/incubator-weex,acton393/incubator-weex,alibaba/weex,alibaba/weex,alibaba/weex,erha19/incubator-weex,Hanks10100/incubator-weex