power_MemorySuspend: Remove redundant logic to determine memory size

Because we make memory_suspend_test to be able to determine the
suitable size to test, instead of 1G default when not specify size.
This patch remove logic to determine size in power_MemorySuspend

CQ-DEPEND=CL:261212
BUG=chrome-os-partner:37479, chrome-os-partner:37193
TEST=Tested in peach_pit

Change-Id: I0eba1617c81ebccbcc2bb873b9f594de9e109808
Signed-off-by: Puthikorn Voravootivat <puthik@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/261199
Reviewed-by: Julius Werner <jwerner@chromium.org>
2 files changed