Remove test data from station 1102

[153957]

Station 1102 was tested at Nikhef before deployment.

The test data was unfortunately uploaded to the actual station.
Most importantly the GPS location of the Nikhef is now attached to the station.
This needs to be removed/migrated to a test station:
Example test data: http://data.hisparc.nl/show/stations/1102/2016/5/23/

Once the station is properly installed the date for real/good data will be established and the test data can easily be removed.