Bug#1117727: dolphin-emu: Vendored minizip-ng contains non-distributable documents

[Bastian Germann]

Source: dolphin-emu
Version: 2509+dfsg-1
Severity: serious
Control: forwarded -1 https://github.com/dolphin-emu/dolphin/pull/13997

Please note that your source package contains non-free, even
non-distributable documents related to the ZIP format.
See forwarded URL.

I have tried to fix it myself but I am not sure how you generate the
upstream tarball. You should probably make that obvious for team
members. The new d/watch version 5 has a Git-Modules option.