I cut mine out. This gives you the option to use the steamer insert as a difuser, which will allow you to get higher heats. Or you can put a grate in place and put a terracotta saucer on the grate which will help keep a lower temperature.
I have run my mini with the terracotta saucer and with the tamale insert. I prefer the tamale insert and just have a pie tin for a drip pan and control the temperatures via the dampers.
*Weber Mini WSM* *Weber Touch and Go Performer X3* *Sublime Smoke UDS* *Maverick ET-732 * World's Fastest Blue Thermapen **Pitmaster IQ110*