DEP: Complete xtgeo 4 XYZ deprecations

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 25.00000% with 3 lines in your changes missing coverage. Please review.

Project coverage is 81.34%. Comparing base (0375fed) to head (751f5c7). Report is 20 commits behind head on main.

Files	Patch %	Lines
src/xtgeo/xyz/points.py	33.33%	2 Missing :warning:
src/xtgeo/xyz/polygons.py	0.00%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #1222 +/- ## ========================================== + Coverage 80.02% 81.34% +1.31% ========================================== Files 98 92 -6 Lines 13680 12561 -1119 Branches 2203 2031 -172 ========================================== - Hits 10948 10218 -730 + Misses 1999 1664 -335 + Partials 733 679 -54 ```

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