Remove dead community links

[phillipj]

These community links seems gone with the wind ATM:

• Hong Kong community: http://nodejs.hk/
• Israeli wiki: http://nodejs.co.il/
• Node.js in Spanish: http://www.nodejs.es/
• Node.js in Vietnamese: http://nodejs.vn/

Should we try to contact these communities to ensure they're not planning to resurrect these sites again any time soon?

[fhemberger]

👍

[phillipj]

Merging to get this fixed, although open for suggestions about contacting the communities affected.