refactor(abstract-utxo): delete unreachable utxolib explainPsbt path #2987

Job	Run time
Generate head API spec	4m 51s
Generate merge base API spec	7m 20s
Check specs identical	0s
Check breaking changes	0s
Generate vacuum reports for API spec	-1s
API Spec Check	3s
Linter Override	-1s
	12m 12s

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