[Fuchsia] Remove package signing step from packaging GN definitions.

Removes the package signing step, because "pm genkey" is deprecated in
the Fuchsia builder toolchain.

Change-Id: I8aebaf1658f77850f9d727a9952515b542d31fdf
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1662601
Commit-Queue: Kevin Marshall <kmarshall@chromium.org>
Commit-Queue: Fabrice de Gans-Riberi <fdegans@chromium.org>
Auto-Submit: Kevin Marshall <kmarshall@chromium.org>
Reviewed-by: Fabrice de Gans-Riberi <fdegans@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#669825}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: ff44f87cb1b10119a0a8fb68d219464d2ca22e88
1 file changed