Fix duplicate layout method

[elihart]

Fixes #988

Also updates AGP to 4.0.

Got rid of checkstyle as something broke with it and the AGP upgrade. couldn't be bothered to figure out the fix since all our new code should be kotlin anyway

[lizhuogui]

Same issuse when override layout without annotation or different params name

    override fun layout(layoutRes: Int): EpoxyModel<TextView> {
        return super.layout(layoutRes)
    }

    override fun layout(@LayoutRes layout: Int): EpoxyModel<TextView> {
        return super.layout(layout)
    }

[elihart]

I've updated it to ignore param name and just look at type. annotation shouldn't affect it