What is Avid Virtual Instruments 10.3?

[ergalthema]

I was installing the PT11 update and noticed Avid Virtual Instruments 10.3 in my long list of available downloads. I don't recall installing it, and I've been keeping all my install files - it wasn't there. However, when I open PT and look at my instruments, I don't see anything that wasn't already there - Vacuum, Xpand, Structure, etc.

What was the +3GB I just installed?

Edit: Crap, I guess that was for PT10. Any idea how I can remove it?

[Bruce Paine]

Those are the virtual instruments for Pro Tools 10:
http://duc.avid.com/showthread.php?t=343731

It would have installed some RTAS plug-ins, which you can delete if you do not have Pro Tools 10 installed:
/Library/Application Support/Digidesign (This will also delete installed RTAS plug-ins.)

You do not need any of those Pro Tools 10 folders there for Pro Tools 11:
/Library/Application Support/Digidesign/
AIR
Databases
DHS
Plug-In Settings
Plug-Ins
Plug-Ins (Unused)

You also would not need this folder, where some of the files may have been installed:
/Applications/Avid/AIR Content

More here:
How to manually uninstall Pro Tools 10 and Pro Tools Express on Mac OS X Mavericks 10.9.x