Phantom File

I compiled my program and saw:

Multiple libraries were found for “Adafruit_MCP23017.h”

Used: C:\Users\Owner\Arduino\arduinosketchfolder\libraries\Adafruit_MCP23017

Not used: C:\Program Files (x86)\Arduino\libraries\Adafruit-MCP23017

But when I go to C:\Program Files (x86)\Arduino\libraries there is no Adafruit-MCP23017.

What is going on here and how do I stop the compiler from trying to access a file that doesn’t seem to exist?

The program does run fine.

Thanks,

Rick