Remove elider button.png.sha1 per issue 1062142

Apparently the png was never created but its sha1 was, and that tricks
./translate.py (see bug). Remove the .sha1 file to untrick that tool.

Bug: 1062142
Change-Id: I7e01ae2293ae6036118467e6eb29b6e7889043ea
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2106700
Commit-Queue: Noel Gordon <noel@chromium.org>
Reviewed-by: Alex Danilo <adanilo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#750857}

ui/chromeos/file_manager_strings_grdp/IDS_FILE_BROWSER_LOCATION_BREADCRUMB_ELIDER_BUTTON_LABEL.png.sha1

-e9365c70d882e8106aa7ce8199588c4b42b1a1ba
\ No newline at end of file