platform/arm: delete the eeprom callbacks

These are now unused, since elog module no longer calls thru them.

BUG=chromium:1028380
TEST=compiles

Change-Id: I8eb456c79a698aa7e8275aef1348909c90c6776e
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/mosys/+/2489794
Tested-by: Jack Rosenthal <jrosenth@chromium.org>
Reviewed-by: Paul Fagerburg <pfagerburg@chromium.org>
Commit-Queue: Jack Rosenthal <jrosenth@chromium.org>
40 files changed