[Systems] Please remove these wiki spammer accounts

[Dave Crossland]

And some more likely spam accounts:

https://wiki.sugarlabs.org/go/User:Benben_Bass_Raver
https://wiki.sugarlabs.org/go/User:BernieTest
https://wiki.sugarlabs.org/go/User:MagnoliaLitchfi
https://wiki.sugarlabs.org/go/User:MargheritaLandr
https://wiki.sugarlabs.org/go/User:Jaelyn3374
https://wiki.sugarlabs.org/go/User:TravisGouin
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