Remove array type for input on InputFilterInterface::add()
Remove array type for input on InputFilterInterface::add()

array capabilities only exists for InputFilter class but not for their parent BaseInputFilter which is responsible of implement the interface.

People with tools warning about type unsafe should typehint against Zend\InputFilter\InputFilter instead Zend\InputFilter\InputFilterInterface

Reverts:

* zendframework/zf2#2304
* 8fa473579e3cd3ef24765f00bfeb2af152a0ea2a
* 93b9bd0538ce223a1808dd4d03d2d23bc776ac8b

Maks3w/zend-inputfilter,zendframework/zend-inputfilter,MadCat34/zend-inputfilter,Blinden/zend-inputfilter,zf2timo/zend-inputfilter,akomm/zend-inputfilter,stefanotorresi/zend-inputfilter