This reverts commit I84c7fc352da80609d424217250830f19a599c940.
Reason for revert: Neither “Show all diffs” nor the keyboard shortcuts
appear to work. However, clicking on the triangle works.
Original issue's description:
> Add 'Show 75 more' button to gr-file-list
>
> gr-file-list has an issue handling very large (500+) amounts of files
> due to the dynamic rendering of many DOM elements. This change caps the
> number of files shown initially at 75, and allows the user to view more
> in chunks of 75.
>
> Also added is a button that allows the user to show all files.
>
> Bug: Issue 4575
> Change-Id: I84c7fc352da80609d424217250830f19a599c940
>
Change-Id: I7acfad051e0a255d09ee6e02f9dfc0137d5d37ff
648121b946