Remove unused code #960

Job	Run time
Linux [UBSAN] [lmdb \| clang]	36m 40s
Linux [ASAN] [lmdb \| clang]	24m 2s
Linux [ASAN_INT] [lmdb \| clang] (Errors Ignored)	37m 33s
macOS [UBSAN] [lmdb \| clang]	39m 55s
Linux [TSAN] [lmdb \| clang] (Errors Ignored)	12m 32s
macOS [ASAN] [lmdb \| clang]	34m 6s
Linux [LEAK] [lmdb \| clang] (Errors Ignored)	23m 39s
macOS [TSAN] [lmdb \| clang] (Errors Ignored)	34m 44s
macOS [UBSAN] [rocksdb \| clang]	49m 59s
macOS [ASAN] [rocksdb \| clang]	39m 21s
macOS [TSAN] [rocksdb \| clang] (Errors Ignored)	48m 43s
Linux [UBSAN] [rocksdb \| clang]	42m 56s
Linux [ASAN] [rocksdb \| clang]	23m 45s
Linux [ASAN_INT] [rocksdb \| clang] (Errors Ignored)	13m 54s
Linux [TSAN] [rocksdb \| clang] (Errors Ignored)	12m 37s
Linux [LEAK] [rocksdb \| clang] (Errors Ignored)	24m 29s
	8h 18m 55s

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