Indeed. In current, static array value is implicitly converted to pointer or dynamic array type on function argument.
But it is a *implicit conversion* feature, and it does not directly related to ABI. 

And static array to pointer conversion is already deprecated.
https://github.com/D-Programming-Language/dmd/blob/master/src/mtype.c#L55
https://github.com/D-Programming-Language/dmd/blob/master/src/mtype.c#L4050

So, to remove these lines is reasonable.