Remove `node::process_confirmed (...)` #2384

Job	Run time
Linux [UBSAN] [lmdb \| clang]	45m 0s
Linux [ASAN] [lmdb \| clang]	43m 55s
macOS [UBSAN] [lmdb \| clang]	38m 25s
Linux [ASAN_INT] [lmdb \| clang] (Errors Ignored)	51m 36s
macOS [ASAN] [lmdb \| clang]	32m 19s
Linux [TSAN] [lmdb \| clang]	48m 17s
macOS [TSAN] [lmdb \| clang]	35m 41s
Linux [LEAK] [lmdb \| clang]	42m 48s
macOS [UBSAN] [rocksdb \| clang]	46m 19s
Linux [UBSAN] [rocksdb \| clang]	52m 53s
macOS [ASAN] [rocksdb \| clang]	42m 18s
Linux [ASAN] [rocksdb \| clang]	59m 45s
macOS [TSAN] [rocksdb \| clang]	57m 46s
Linux [ASAN_INT] [rocksdb \| clang] (Errors Ignored)	1h 0m 26s
Linux [LEAK] [rocksdb \| clang]	1h 1m 0s
	11h 58m 28s

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