See the thread below, doesn't look like an option or something that is coming.
Re: AppInsight for SQL
quote from thread (aLTeReGo):
c) SW has always been fully customize-able, why can't I disable components...
AppInsight for SQL was designed from the ground up to be a simple, turn key monitoring solution for Microsoft SQL. In that pursuit certain sacrifices had to be made. It was a delicate balancing act between simplicity and flexibility, and this is where we landed. Some of these decisions were based on performance and effeminacy of polling. If we provided the ability to disable individual components, then each item would have to be its own an isolated query. By combining much of this information into a single query we could simultaneously increase the amount of information we can collect while reducing overhead to the Orion server.