Clean open links

[bacharakis]

Due to some code refactoring there is chance that in the links table there are some open connection between nodes.
For example there is a link from Node1 to Node2 but Node2 doesn't exist.

Identify theses open links and remove them

[gogiarishabh]

I can try this one!

[gogiarishabh]

There are no such missing links in the miserables.json file.