remove copyright
 

Forumsoftware: vBulletin®, versie 3.8.2
Copyright ©2000 - 2009, Jelsoft Enterprises Ltd.
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can I remove this? if not, can i remove only 'Forumsoftware: vBulletin®, versie 3.8.2' ?
please can someone explain to me, what may i remove and what not of copy right lines?

thank you