chore: hide distribution channels

The "distribution channels" column bloats the table and is rarely going
to be something that users focus on.
Interested users can bring it back via the column picker dropdown.

src/components/Columns.js

@@ -109,6 +109,7 @@ function getColumns(data, year) {
       options: {
         filter: true,
         sort: false,
+        display: false,
         customBodyRenderLite: (dataIndex) => {
           return TooltipTexts(
             data[dataIndex]["distribution_channels"],