Update .gitignore

Author: geographika

.gitignore

@@ -11,5 +11,4 @@ web/site
 workshop/jupyter/content/data/woudc-stations.xml
 workshop/jupyter/content/data/srtm/srtm_high_pass.geotiff
 workshop/jupyter/content/notebooks/test/10-boreholes.gml
-workshop/jupyter/content/data/output/world_3857_cog.tif
 workshop/jupyter/content/notebooks/test/10-populated-places-ba.json