Bug#831525: [libretro-mupen64plus] Remove copies of mupen64plus-*

[Charlemagne Lasse]

Source: libretro-mupen64plus
Version: 2.0+git20160207+dfsg2-1
Severity: serious

Marked as serious because it is a violation of paragraph 4.13 from the
Debian Policy.

Debian should not ship the same things twice. So the Debian Games Team
should decide whether it wants to ship mupen64plus-* or
libretro-mupen64plus

Maybe it is also possible not to use the included copies and instead
load the plugins from mupen64plus-*