Remove `node::process_confirmed (...)` #2314

Job	Run time
Linux [UBSAN] [lmdb \| clang]	42m 21s
macOS [UBSAN] [lmdb \| clang]	37m 38s
Linux [ASAN] [lmdb \| clang]	40m 29s
macOS [ASAN] [lmdb \| clang]	31m 32s
Linux [ASAN_INT] [lmdb \| clang] (Errors Ignored)	40m 37s
macOS [TSAN] [lmdb \| clang]	33m 18s
Linux [TSAN] [lmdb \| clang]	42m 3s
macOS [UBSAN] [rocksdb \| clang]	42m 40s
Linux [LEAK] [lmdb \| clang] (Errors Ignored)	40m 16s
Linux [UBSAN] [rocksdb \| clang]	54m 20s
macOS [ASAN] [rocksdb \| clang]	41m 25s
macOS [TSAN] [rocksdb \| clang]	55m 15s
Linux [ASAN] [rocksdb \| clang]	55m 51s
Linux [ASAN_INT] [rocksdb \| clang] (Errors Ignored)	56m 28s
Linux [LEAK] [rocksdb \| clang] (Errors Ignored)	57m 47s
	11h 12m 0s

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