Remove import workarounds

[visr]

Fixes #124.
This only removes lines because the imports didn't seem to be used.

[rbruijnshkv]

As there is still a slight offset in node_id's when comparing the outcome of the AGV model at our HKV server and GitHub, I can not merge this PR as the information in the feedback forms will be lost. My code needs this original code to keep up with the development of the LHM. Can only merge this when when the cause of change in node_id is found and solved.

[visr]

@rbruijnshkv that comment seems to be for #178. Can this go in in the meanwhile?

[gijsber]

@rbruijnshkv @visr About that mismatch in Ids.
What about creating a mapping table with the ids in model 1 and 2 (based on coordinates match) and use that to update the feedback form to use the new ids.

[rbruijnshkv]

Good suggestion. I do see some bottlenecks in this though: sometimes there are two nodes stacked on eachother on the exact same location due to the delivered data (i.e. two pumps on the same location, two weirs on the same location, a combination of a weir/pump on the same location, etc). This can't be tackled by a mapping table based on the location.