Interface defination override in instatiation

I have BFM interaface which is parametrized interface which takes clk and reset as parameter , for ex: interface aa(clk,reset) ,

But during instantiation , I wan to instantiated it without passing clk and reset as parameter .
,for ex : aa a();

With this I am seeing vcs compile time warnings,bcs of defination mismatches.
Is there a way to overide interface defination such that my instantiation willnot be shown as vcs compile time warning ?

The tiny piece of code you show looks fine to me. This is not really a tool specific forum, you should contact your vendor for support.