eeprom: drop support for EC eeprom

Nothing uses this anymore, delete it.

BUG=chromium:990438
TEST=compiles

Change-Id: I98ec121b3d1a6ce967cfffff71be906029bfbcef
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/mosys/+/2469469
Tested-by: Jack Rosenthal <jrosenth@chromium.org>
Commit-Queue: Jack Rosenthal <jrosenth@chromium.org>
Reviewed-by: Edward O'Callaghan <quasisec@chromium.org>
Reviewed-by: Paul Fagerburg <pfagerburg@chromium.org>
7 files changed