Remove "async" parameter from builders.function{Expression,Declaration}.
Remove "async" parameter from builders.function{Expression,Declaration}.

The .async field defaults to false, and if you want it to be true, you can
set the property directly after constructing the node.

benjamn/ast-types,jamestalmage/ast-types,benjamn/ast-types,gabelevi/ast-types,cpojer/ast-types,benjamn/ast-types,marcioj/ast-types