Clean up priority scheduler bucket look ups #1943

Job	Run time
Linux [UBSAN] [lmdb \| clang]	37m 21s
Linux [ASAN] [lmdb \| clang]	40m 23s
Linux [ASAN_INT] [lmdb \| clang] (Errors Ignored)	38m 4s
macOS [UBSAN] [lmdb \| clang]	34m 46s
Linux [TSAN] [lmdb \| clang]	38m 3s
macOS [ASAN] [lmdb \| clang]	29m 40s
Linux [LEAK] [lmdb \| clang] (Errors Ignored)	38m 12s
macOS [TSAN] [lmdb \| clang]	29m 38s
Linux [UBSAN] [rocksdb \| clang]	46m 53s
macOS [UBSAN] [rocksdb \| clang]	39m 25s
Linux [ASAN] [rocksdb \| clang]	49m 10s
macOS [ASAN] [rocksdb \| clang]	38m 41s
Linux [ASAN_INT] [rocksdb \| clang] (Errors Ignored)	48m 41s
macOS [TSAN] [rocksdb \| clang]	50m 57s
Linux [LEAK] [rocksdb \| clang] (Errors Ignored)	49m 1s
	10h 8m 55s

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