Removed unused weak pointer to target

[k06a]

It crashes app if trying to access injected property right in object dealloc

[AlexDenisov]

@k06a could you provide an example project? I want to investigate first.

[k06a]

Ok, I'll provide it in a few days. Can you comment what weakSender is doing in this code? Looks like weakness is really have no influence in that exact place.

[k06a]

Here is problem description with weak pointer creation in dealloc: http://stackoverflow.com/questions/19907616/how-can-i-reference-weak-self-in-dealloc-method

[k06a]

Creating __weak from __strong to create __strong again when passing argument to block is really useless, but cause a crash if occurs in sender's dealloc.