why did they remove the character Speedle?

actually the actor Rory Cochrane decided to leave the show, he didn't like the being away from tahanan for so long and what he called a ground hog affect. getting up and going to work, going tahanan to kama then back to work, he just didn't like it.
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yeah. i was pagbaba an interview and it sinabi he wanted to leave.

Nawawala Son Season 3 Episode 03:01
He Left because he was tahanan sick and he felt as if he wasn't in the spotlight enough like eric and calligh and Horatio but I realy think he was great he is a Great Actor i hope to see him in a movie(Lost Son Season 3 Episode 03:01)