You deleted the node https://www.openstreetmap.org/node/2702400314 . 
However, there's a problem with Delhi, as it has a dual role as a state and a city.
There's only one relation for Delhi, but (until the change) two nodes, one with place=state and one with place=city. You wanted to clean that up, right?

With the change, Delhi no longer appears as a city on the map on openstreetmap.org (and in the search it is only found as a state too). Do you have a solution?

Perhaps a simple fix would be to change place=state to place=city in the remaining node. In OSM, the place=state node isn't used for rendering anyway, but rather the center of the relation.
See Berlin for example: only has one place=city node and none with place=state.
Or revert changes?