[aur-general] delete mingw32-ssh2-static

[Joao Cordeiro]

mingw32-libssh2-static [1] and mingw32-ssh2-static [2] are the same. I think
[2] should be deleted.

Thanks.

[1] http://aur.archlinux.org/packages.php?ID=28886
[2] http://aur.archlinux.org/packages.php?ID=28851