198.97.38.0/24 no longer defined (IANA RESERVED)

[nil0x42]

198.97.38.0/24 seems to be no longer IANA Reserved (added in #174), it should be removed from is_defined list:

whois 198.97.38.1

% Copyright (c) Nic.br
%  The use of the data below is only permitted as described in
%  full by the terms of use at https://registro.br/termo/en.html ,
%  being prohibited its distribution, commercialization or
%  reproduction, in particular, to use it for advertising or
%  any similar purpose.
%  2021-09-28T11:39:13-03:00 - IP: XX.XX.XX.XX

inetnum:     198.97.38.0/24
aut-num:     AS268313
abuse-c:     DANOG27
owner:       Fernandes & Rodrigues Consultores Associados
ownerid:     11.125.730/0001-35
responsible: Felipe Alcarde Rodrigues
owner-c:     FEARO14
tech-c:      DANOG27
created:     20180618
changed:     20200618

nic-hdl-br:  FEARO14
person:      Felipe Alcarde Rodrigues
created:     20090408
changed:     20180827

nic-hdl-br:  DANOG27
person:      Daniel Nogueira
created:     20120626
changed:     20200618

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% and mail-abuse@cert.br
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