Remove tabular file from repo, fix comments

config/plugins/visualizations/charts/sample.txt

@@ -1,9 +0,0 @@
-43	55	63	99	28	85	20	31	47	14
-1	63	94	83	94	74	7	73	51	7
-8	34	2	94	87	21	72	51	3	84
-5	50	40	30	59	43	19	77	30	80
-22	55	69	43	77	72	12	54	53	56
-36	34	81	28	59	64	54	29	57	69
-57	90	93	32	45	98	40	16	52	83
-6	17	39	86	10	11	38	69	19	50
-67	51	47	22	58	27	65	49	92	96

config/plugins/visualizations/charts/static/views/groups.js

@@ -1,4 +1,4 @@
-/** This class renders the chart configuration form. */
+/** This class renders the chart data selection form with repeats. */
 define( [ 'utils/utils', 'mvc/ui/ui-misc', 'mvc/form/form-view', 'mvc/form/form-repeat', 'mvc/form/form-data', 'plugin/views/description' ],
     function( Utils, Ui, Form, Repeat, FormData, Description ) {
     var GroupView = Backbone.View.extend({

config/plugins/visualizations/charts/static/views/viewport.js

@@ -1,6 +1,5 @@
 /**
  *  The viewport creates and manages the dom elements used by the visualization plugins to draw the chart.
- *  Additionally, this class creates default request strings and request dictionaries parsed to the visualization plugins.
  *  This is the last class of the charts core classes before handing control over to the visualization plugins.
  */
 define( [ 'mvc/ui/ui-portlet', 'mvc/ui/ui-misc', 'utils/utils' ], function( Portlet, Ui, Utils ) {