Do not run convert_to_capped_collection*.js FSM workloads in the concurrency_simultaneous*.yml tests suites

The convertToCapped command consistently takes minutes to acquire a global lock in FSM testing, and when it does, background operations on the database causes it to fail. This causes the assert.soon() to timeout on multiple occasions due to how long convertToCapped takes to run in certain scenarios. Removing convertToCapped from FSM testing would resolve these issues.