Its possible that a marker is deleted, while its info is being retrieved.
This will produce a logged error such as: "Marker id 6922 not found.",
while the caller continues working without the info.

In this case, the logged error is not necessary - the marker is gone,
not being able to retrieve its info is expected behavior.

This change adjusts MarkerUtilities to not log an error for a not found Marker,
if the marker is not existing at the time of catching the respective exception.

Fixes: #2219