Remove `node::process_confirmed (...)` #2315

Job	Run time
macOS [UBSAN] [lmdb \| clang]	34m 8s
macOS [ASAN] [lmdb \| clang]	30m 56s
macOS [TSAN] [lmdb \| clang]	33m 48s
Linux [UBSAN] [lmdb \| clang]	38m 31s
macOS [UBSAN] [rocksdb \| clang]	41m 35s
Linux [ASAN] [lmdb \| clang]	39m 18s
macOS [ASAN] [rocksdb \| clang]	40m 11s
Linux [ASAN_INT] [lmdb \| clang] (Errors Ignored)	39m 57s
macOS [TSAN] [rocksdb \| clang]	53m 59s
Linux [TSAN] [lmdb \| clang]	40m 53s
Linux [LEAK] [lmdb \| clang] (Errors Ignored)	38m 22s
Linux [UBSAN] [rocksdb \| clang]	51m 7s
Linux [ASAN] [rocksdb \| clang]	55m 17s
Linux [ASAN_INT] [rocksdb \| clang] (Errors Ignored)	58m 1s
Linux [LEAK] [rocksdb \| clang] (Errors Ignored)	56m 32s
	10h 52m 35s

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