Remove README section on company-mode template completion

The feature is currently disabled since there was a problem it. See this
commit:

07411c37f55a02c1530adc24b3cf9b43e00120da
Author: Simon Carter <sicarter@microsoft.com>
Date:   Thu May 1 12:38:39 2014 +0100

    Disabling company templating by default, as it won't work with the new annotation system.