`FionaDeprecationWarning`

[emanuel-schmid]

In climada.util.constants the line 51 causes this deprecation warning:

from fiona.crs import from_epsg

This function will be removed in version 2.0. Please use CRS.from_epsg() instead.

There is already a PR #998 drafted that removes the fiona package altogether from the explicit dependencies.

[peanutfun]

from_epsg is only used in this line

climada_python/climada/util/constants.py

Line 215 in 08ec51b

DEF_CRS_FIONA = from_epsg(DEF_EPSG)

but the constant DEF_CRS_FIONA is never used within the entire Climada code base (see https://github.com/search?q=org%3ACLIMADA-project+DEF_CRS_FIONA&type=code). We can simply remove it and be rid of the warning.