Don't ask for surveillance camera level in case a location is already set

[ironspock]

SC is asking for surveillance camera level (refer to enclosed screenshots).
However a location (here location=roof) is already configured

Expected Behavior
Don't ask for surveillance camera level in case a location is already set.

Additional Information
refer to
https://www.openstreetmap.org/node/13410610008
https://www.openstreetmap.org/node/13410610009

Versions affected
SC 63.4