Remove skip_render_test_goldens_download gclient parameter

Unused following crrev.com/c/2569518 and crrev.com/c/2572416.

Change-Id: I8bba8f261a054aa4163f1a5651927eaf7ee21241
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2573476
Auto-Submit: Victor Vianna <victorvianna@google.com>
Commit-Queue: Brian Sheedy <bsheedy@chromium.org>
Reviewed-by: Brian Sheedy <bsheedy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#834300}

DEPS

@@ -103,11 +103,6 @@ vars = {
   # privately accessible.
   'checkout_telemetry_dependencies': False,
 
-  # Bots that don't consume render test goldens can skip downloading
-  # them.
-  # TODO(crbug.com/1103836): Remove after removing infra/ code.
-  'skip_render_test_goldens_download': False,
-
   # Bots that don't consume WPR archives can skip downloading
   # them.
   'skip_wpr_archives_download': False,