Channel class cleanup #2312

Job	Run time
Linux [UBSAN] [lmdb \| clang]	42m 18s
Linux [ASAN] [lmdb \| clang]	47m 40s
Linux [ASAN_INT] [lmdb \| clang] (Errors Ignored)	46m 0s
macOS [UBSAN] [lmdb \| clang]	39m 39s
Linux [TSAN] [lmdb \| clang]	41m 6s
macOS [ASAN] [lmdb \| clang]	37m 47s
Linux [LEAK] [lmdb \| clang] (Errors Ignored)	45m 34s
macOS [TSAN] [lmdb \| clang]	35m 7s
Linux [UBSAN] [rocksdb \| clang]	51m 15s
macOS [UBSAN] [rocksdb \| clang]	49m 34s
macOS [ASAN] [rocksdb \| clang]	51m 35s
Linux [ASAN] [rocksdb \| clang]	59m 17s
macOS [TSAN] [rocksdb \| clang]	1h 2m 4s
Linux [ASAN_INT] [rocksdb \| clang] (Errors Ignored)	58m 46s
Linux [LEAK] [rocksdb \| clang] (Errors Ignored)	59m 15s
	12h 6m 57s

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