Revert "bootkpi: Add KPI Marker for System Resume"

This reverts commit 7fa00387.

System resume KPI marker was added wrongly in printk.
Revert the change. System resume kpi reference is taken from
dmesg logs now.

Change-Id: I8ba38d0c5accd41fc31fb9b64b3a3957e719982c
Signed-off-by: Sanjay Dwivedi <sanjaykd@codeaurora.org>