Various cleanups to store classes #2321

Job	Run time
macOS [UBSAN] [lmdb \| clang]	35m 49s
Linux [UBSAN] [lmdb \| clang]	39m 58s
macOS [ASAN] [lmdb \| clang]	30m 7s
Linux [ASAN] [lmdb \| clang]	39m 48s
Linux [ASAN_INT] [lmdb \| clang] (Errors Ignored)	43m 4s
macOS [TSAN] [lmdb \| clang]	33m 51s
Linux [TSAN] [lmdb \| clang]	42m 11s
macOS [UBSAN] [rocksdb \| clang]	43m 54s
Linux [LEAK] [lmdb \| clang] (Errors Ignored)	40m 21s
macOS [ASAN] [rocksdb \| clang]	38m 43s
Linux [UBSAN] [rocksdb \| clang]	53m 20s
macOS [TSAN] [rocksdb \| clang]	53m 37s
Linux [ASAN] [rocksdb \| clang]	57m 50s
Linux [ASAN_INT] [rocksdb \| clang] (Errors Ignored)	59m 0s
Linux [LEAK] [rocksdb \| clang] (Errors Ignored)	58m 37s
	11h 10m 10s

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