Remove TableTools_JUI.css file from project

[luismaia]

Hi,

Using Bootstrap (2 and 3) the print_info message and title are not visible.

Example:

Looking at TableTools project, the message is showing correctly: http://live.datatables.net/pugunit/1

After some analysis (like issue #109 and #110) I found out that this problem was caused due to the TableTools reformulation on version 2.2.0 (see commit DataTables/TableTools@9940846 for more details).

In my case, this problem was happening because I was calling TableTools_JUI (with deprecated code) after dataTables.tableTools (with the TableTools up to date code) in my application.css file, like this:

 *= require dataTables/bootstrap/3/jquery.dataTables.bootstrap
 *= require dataTables/extras/dataTables.tableTools
 *= require dataTables/extras/TableTools_JUI

Taking that into consideration, this PR removes outdated file TableTools_JUI.css, since the correct (and up to date) css code is defined on file dataTables.tableTools.css.scss.

After this change print_info message gets its normal look and feel:

Thank you!

[ricardodovalle]

@luismaia Thank you very much.