Remove unused proto from generate.sh

- checker recipe doesn't sync this, but it
isn't used anyway.

TEST=./generate.sh
BUG=chromium:1047462

Change-Id: Ibfbf81db5bbbea34e728327d55b52506ef1401a9
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/config/+/2054751
Commit-Queue: Andrew Lamb <andrewlamb@chromium.org>
Commit-Queue: David Burger <dburger@chromium.org>
Tested-by: Andrew Lamb <andrewlamb@chromium.org>
Auto-Submit: Andrew Lamb <andrewlamb@chromium.org>
Reviewed-by: David Burger <dburger@chromium.org>
1 file changed