Removed configuration of Sauce Labs browsers from the gem

Paired with Tristan Hill (tristan@saticed.me.uk) and Nikolas Everett.

Also bumped patch version to 0.2.6 and releasing the new version of the
gem.

Bug: 61067
Change-Id: Id12c6dfc748abeef99120bcf2e7c8e679cd9a34c