Warning: Unbrewed dylibs were found in /usr/local/lib

When I enter the command brew doctor I get the error below. This this something to worry about?

Im very new to command line stuff. Im using homebrew to install Drush (for Drupal).

Last login: Wed Oct  9 14:59:40 on ttys001
unknown:~ MY-USERNAME$ brew doctor
Warning: Unbrewed dylibs were found in /usr/local/lib.
If you didn't put them there on purpose they could cause problems when
building Homebrew formulae, and may need to be deleted.

Unexpected dylibs:
    /usr/local/lib/libTrAPI.dylib 

These files, in your case only one, is an residual files from older installations. Nothing to worry about.

You can easily remove it with:

rm /usr/local/lib/libTrAPI.dylib

libTrAPI.dylib is for your VPN software. If you want to continue to use your VPN, don't delete it, just add it to the whitelist in doctor.rb and then homebrew won't complain about it.

To find your doctor.rb simply run

locate doctor.rb

Look for white_list, mine was on line 105. It should probably look like this.

white_list = {
  "libfuse.2.dylib" => "MacFuse",
  "libfuse_ino64.2.dylib" => "MacFuse",
  "/usr/local/lib/libTrAPI.dylib" => "TrAPI"
}