Revert "Fix: Create point geometry from collection with single-node way"

[joto]

This reverts commit 748fc0ab5bf4d9b459f2cbab54f4523c7b09624a.

Turns out this wasn't such a good idea, see #1767 for details.

The gist of it is that we always return NULL geometry when there are problems and so this should be the case here also for consistency.