Remove duplicative grid package

[ashleykolodziej]

Fixes #285 by removing a duplicative reference to the responsive foundation grid package.

The purpose of the tools-cgb package in Responsive Foundation is to only print the exact CSS classes your plugin needs. This includes all icons and grid classes. The proper way to change this behavior is to change the variables above it:

$burf-extras:					false;
$use-default-icons:                        false;
$print-icon-classes:                       false;

Changing any of these values to "true" will print all classes out to the CSS, including all grid classes.

That said, that will re-enable this duplicative behavior. My strong suspicion is that we don't actually need all those classes. I don't see any references to the grid classes in the plugin except for in the Sass files, where placeholder classes are being used. I verified that this line was introduced here: ebd1a7d

This was probably to support extending the .col- classes. These have since been refactored to use placeholder classes, as intended, and it should now be safe to remove this import.

[ashleykolodziej]

Visual regression between sandbox and ID demos: passed. The failure in this report is due to a long load time.
https://id-ashley.cms-devl.bu.edu/bu-blocks/
https://id-demos.cms-devl.bu.edu/bu-blocks/

[ashleykolodziej]

Visual regression on COM: passed
https://id-ashley.cms-devl.bu.edu/com/
https://wwwl.bu.edu/com/

[ashleykolodziej]

Visual regression on LAW: passed
https://id-ashley.cms-devl.bu.edu/law/
https://www.bu.edu/law/

[ashleykolodziej]

Visual regression on SPH: passed
https://id-ashley.cms-devl.bu.edu/sph/
https://www.bu.edu/sph/

[ashleykolodziej]

One Ed: passed
Using this list: https://github.com/bu-ist/bu-blocks/wiki/Visual-Regression-Testing-URLs#full-list

[acketon]

👍