Revert "When building blobs with subcomponents, prefix them with an index structure."

This reverts commit 86739dc097db9aa7ede99eb2040027702a8ad661.

The said commit causes ARM images bricking Snow.

BUG=chrome-os-partner:16412
TEST=manual
   with the change reverted Snow boots again

Change-Id: Id9a213bf79b1821a97f0a5bfbd21c518d80b28a3
Reviewed-on: https://gerrit.chromium.org/gerrit/41066
Tested-by: Vadim Bendebury <vbendeb@chromium.org>
Reviewed-by: Gabe Black <gabeblack@chromium.org>
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
Reviewed-by: Che-Liang Chiou <clchiou@chromium.org>
Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
Commit-Queue: Brian Harring <ferringb@chromium.org>
2 files changed