I wanna remove my diamond banner and everything that says i am Diamond

Hello, so i used to play this game like everyday for 4 hours or more, now i play a maximum of 5 games a week sometimes more, sometimes even less. I stopped playing league for like 6 months or more. I earned diamond, but that was a big mistake. Now everygame i get flamed because people think "He is Diamond he must be good". I am not as good as a diamond player my skills are gold right now maybe even worse. Diamond doesn't represent my skill, but people think it does.

if you know of anyway to remove rank or banners/frame please tell me.