Downgrade locApiStopTracking print error to debug

On cleanup, the locApiStopTracking is called regardless
if a session is active or not, where this error would
be printed. This is an expected case, so it should not
be an error print.

Change-Id: Ieb10d159ad61a212821ef897d50d635354557cca
CRs-fixed: 2461760
1 file changed