Your text doesn't really add up and as such, I'll assume English isn't your first language. On the context of your thread on how to remove negative trust or feedback on your account, you just don't or can't!

Firstly, you've got to realise a negative feedback is another users opinion put of some obsessed traits of cheating or  being reliable from certain demonstrated actions by you. So, its far from being your opinion but you can be sure, its a response to your actions.

The chances you have to its removal is basically based on an appeal either directly to those that did put it on uour account or as an appeal thread on the forum so, they could see if it's worth it. Note, only those who gave the feedback could remove it. and at times, it might start by writing some wrongs. Like those who scammed some users of some funds or loaned some money, having it paid off might be some way to start.

In your case at OP, your level of cheating was high, it could be said, you plagiarised your very own post by posting repeated links which expresses greed in bounty hunting and never the less, spamming too. Its uncalled for and perhaps, you diseasing from such act might be a way to start for you. Probably stay off the bounty path and try to add some more value to the forum before even thinking of an appeal. Trying to get a negative feedback off just to participate in bounties won't do you any good as to its reconsideration.