Remove swig_packed_struct as it is now done in SWIG itself.
Remove swig_packed_struct as it is now done in SWIG itself.

See https://github.com/steeve/swig/commit/e70fce1c1cf928564f009ea512c6c3acb97ace16

Signed-off-by: Steeve Morin <7f3ba7bbc079b62d3fe54555c2b0ce0ddda2bb7c@gmail.com>

sharkone/libtorrent-go,sharkone/libtorrent-go,steeve/libtorrent-go,sharkone/libtorrent-go,dylanvee/libtorrent-go,dylanvee/libtorrent-go,steeve/libtorrent-go,dylanvee/libtorrent-go,anteo/libtorrent-go,waynus/libtorrent-go,anteo/libtorrent-go,waynus/libtorrent-go,waynus/libtorrent-go,steeve/libtorrent-go