refactor(error): remove unused Listen variant (#3311) #2119

Job	Run time
Verify hyper.h is up to date	38s
Check Style	6s
features	31s
Test with Miri	1m 20s
Test C API (FFI)	53s
Check MSRV	2m 57s
Test stable on ubuntu-latest	2m 50s
Test stable on windows-latest	4m 48s
Test stable on macOS-latest	2m 31s
Test beta on ubuntu-latest	2m 20s
Test beta on windows-latest	3m 43s
Test beta on macOS-latest	3m 8s
Test nightly on ubuntu-latest	2m 5s
Test nightly on windows-latest	3m 56s
Test nightly on macOS-latest	2m 44s
Build docs	30s
CI is green	7s
	35m 7s

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