Remove hbaPort type

Remove hbaPort type

This was just a workaround to avoid including the header file that
defines the Port type.  With C11, we can now just re-define the Port
type without the possibility of a conflict.

Reviewed-by: Tom Lane <[email protected]>
Reviewed-by: Chao Li <[email protected]>
Discussion: https://www.postgresql.org/message-id/flat/10d32190-f31b-40a5-b177-11db55597355@eisentraut.org