Revert "* [ios] unload component's view when dealloc is called."
Revert "* [ios] unload component's view when dealloc is called."

This reverts commit 083cd934f89d6bb7acd3da9b6feb443046b34cbe.

HomHomLin/weex,lvscar/weex,Tancy/weex,zzyhappyzzy/weex,dianwodaMobile/DWeex,erha19/incubator-weex,acton393/weex,Neeeo/incubator-weex,Hanks10100/incubator-weex,acton393/weex,dianwodaMobile/DWeex,Hanks10100/weex,xiayun200825/weex,zhangquan/weex,acton393/incubator-weex,KalicyZhou/incubator-weex,xiayun200825/weex,bigconvience/weex,cxfeng1/incubator-weex,zhangquan/weex,kfeagle/weex,weexteam/incubator-weex,acton393/weex,acton393/weex,leoward/incubator-weex,Neeeo/incubator-weex,erha19/incubator-weex,dianwodaMobile/DWeex,LeeJay0226/weex,cxfeng1/incubator-weex,acton393/incubator-weex,acton393/incubator-weex,erha19/incubator-weex,MrRaindrop/weex,lvscar/weex,lvscar/weex,boboning/weex,misakuo/incubator-weex,Hanks10100/weex,erha19/incubator-weex,cxfeng1/weex,namedlock/weex,HomHomLin/weex,alibaba/weex,zhangquan/weex,boboning/weex,bigconvience/weex,Neeeo/incubator-weex,cxfeng1/weex,weexteam/incubator-weex,leoward/incubator-weex,Tancy/weex,kfeagle/weex,leoward/incubator-weex,Tancy/weex,HomHomLin/weex,kfeagle/weex,zzyhappyzzy/weex,zhangquan/weex,xiayun200825/weex,Hanks10100/incubator-weex,dianwodaMobile/DWeex,LeeJay0226/weex,yuguitao/incubator-weex,acton393/incubator-weex,namedlock/weex,zzyhappyzzy/weex,erha19/incubator-weex,acton393/incubator-weex,acton393/incubator-weex,MrRaindrop/weex,cxfeng1/weex,lvscar/weex,cxfeng1/weex,Hanks10100/incubator-weex,MrRaindrop/incubator-weex,miomin/incubator-weex,KalicyZhou/incubator-weex,KalicyZhou/incubator-weex,KalicyZhou/incubator-weex,weexteam/incubator-weex,boboning/weex,zhangquan/weex,cxfeng1/weex,acton393/incubator-weex,yuguitao/incubator-weex,weexteam/incubator-weex,namedlock/weex,HomHomLin/weex,MrRaindrop/incubator-weex,LeeJay0226/weex,misakuo/incubator-weex,namedlock/weex,misakuo/incubator-weex,misakuo/incubator-weex,MrRaindrop/weex,zzyhappyzzy/weex,Tancy/weex,KalicyZhou/incubator-weex,alibaba/weex,lvscar/weex,HomHomLin/weex,KalicyZhou/incubator-weex,alibaba/weex,erha19/incubator-weex,Tancy/weex,Hanks10100/incubator-weex,cxfeng1/incubator-weex,MrRaindrop/weex,namedlock/weex,kfeagle/weex,kfeagle/weex,weexteam/incubator-weex,cxfeng1/incubator-weex,dianwodaMobile/DWeex,misakuo/incubator-weex,yuguitao/incubator-weex,alibaba/weex,weexteam/incubator-weex,MrRaindrop/weex,erha19/incubator-weex,cxfeng1/incubator-weex,miomin/incubator-weex,yuguitao/incubator-weex,lvscar/weex,zzyhappyzzy/weex,MrRaindrop/incubator-weex,miomin/incubator-weex,yuguitao/incubator-weex,alibaba/weex,leoward/incubator-weex,misakuo/incubator-weex,acton393/weex,Neeeo/incubator-weex,Hanks10100/incubator-weex,miomin/incubator-weex,miomin/incubator-weex,alibaba/weex,leoward/incubator-weex,MrRaindrop/weex,bigconvience/weex,dianwodaMobile/DWeex,xiayun200825/weex,Hanks10100/weex,boboning/weex,boboning/weex,MrRaindrop/incubator-weex,MrRaindrop/incubator-weex,MrRaindrop/incubator-weex,HomHomLin/weex,bigconvience/weex,xiayun200825/weex,LeeJay0226/weex,acton393/weex,Tancy/weex,LeeJay0226/weex,Neeeo/incubator-weex,zhangquan/weex,alibaba/weex,boboning/weex,kfeagle/weex,Hanks10100/incubator-weex,yuguitao/incubator-weex,erha19/incubator-weex,Hanks10100/weex,LeeJay0226/weex,bigconvience/weex,miomin/incubator-weex,Neeeo/incubator-weex,miomin/incubator-weex,zzyhappyzzy/weex,Hanks10100/weex,namedlock/weex,Hanks10100/incubator-weex,cxfeng1/incubator-weex,bigconvience/weex,cxfeng1/weex,Hanks10100/incubator-weex,xiayun200825/weex,Hanks10100/weex,acton393/incubator-weex,miomin/incubator-weex,leoward/incubator-weex