SteamVR asset not in scene but triggering SteamVR to launch anyway

Hello,

I downloaded the SteamVR asset from the Unity store, imported it into my assets folder, but have not yet drug it into the game or scene at all, yet, when I hit the preview 'PLAY' button, Steam on my computer launches SteamVR.

What is triggering items in my asset folder I do not want to use yet? Assets like scripts I thought had to be dragged into a scene to be accessed.

 

This seems to be a more general VR question, so I suggest posting it in the main XR forum:
https://forum.unity.com/forums/ar-vr-xr-discussion.80/

Once you import the SteamVR plugin it installs some default settings, one of which is enabling VR. So, when you hit play it is trying to initialize your VR device.