Remove deprecated methods

Remove:

[x] Header::Base.bind_header in favor of Header::Base.bind,
[x] Header::DHCP::DCHPOptions in favor of Header::DHCP::DCHP_OPTIONS
[x] Header::DHCP::Option#has_human_types? in favor of Header::DHCP::Option#human_types?
[x] Header::DNS::Question#has_type? in favor of Header::DNS::Question#type?
[x] Header::Dot11.has_fcs in favor of Header::Dot11.fcs?
[x] Header::Dot11.has_fcs= in favor of Header::Dot11.fcs=
[x] Header::EAP#has_type? in favor of Header::EAP#type?
[x] Header::IPv6.bind_header in favor of Header::IPv6.bind,
[x] Header::TCP::Option#has_length? in favor of Header::TCP::Option#length?,
[x] Header::TCP::Options#add in favor of Header::TCP::Option#push,
[x] PcapNG::Block#has_options? in favor of PcapNG::Block#options,
[x] PcapNG::SPB#has_options? in favor of PcapNG::SPB#options,
[x] PcapNG::UnknownBlock#has_options? in favor of PcapNG::UnknownBlock#options.
[x] Types::Field.delete_field in favor of Types::Field.remove_field,

lemontree55 / packetgen