cpuidle: lpm_levels: Remove duplicate cpuidle tracepoints

Since the cpuidle driver considers the mode selected by qcom governor
for trace events now, remove duplicate traces that report the same
information.

CRs-fixed: 991557
Change-Id: I2a470fb906bb9747f0e1b2c08a231edecc184036
Signed-off-by: Archana Sathyakumar <asathyak@codeaurora.org>