Environment variable xxx skipped due to unmatched define is logged excessively

[berland]

The warning from

ert/src/ert/config/ert_config.py

Lines 145 to 148 in 0d2c4c8

	logger.warning(
	f"Environment variable {new_key} skipped due to"
	f" unmatched define {new_value}",
	)

is logged for every realization, which is too much when it hits.

[berland]

This will go away when https://github.com/equinor/rms-sys/pull/208/files is merged.

It is hard to avoid logging this for every realization.