Remove `node::process_confirmed (...)` #2409

Job	Run time
Linux [UBSAN] [lmdb \| clang]	37m 52s
macOS [UBSAN] [lmdb \| clang]	35m 39s
Linux [ASAN] [lmdb \| clang]	37m 47s
macOS [ASAN] [lmdb \| clang]	28m 57s
Linux [ASAN_INT] [lmdb \| clang] (Errors Ignored)	38m 31s
macOS [TSAN] [lmdb \| clang]	32m 55s
Linux [TSAN] [lmdb \| clang]	39m 23s
macOS [UBSAN] [rocksdb \| clang]	50m 44s
Linux [LEAK] [lmdb \| clang]	38m 19s
macOS [ASAN] [rocksdb \| clang]	46m 48s
Linux [UBSAN] [rocksdb \| clang]	50m 35s
macOS [TSAN] [rocksdb \| clang]	56m 55s
Linux [ASAN] [rocksdb \| clang]	52m 53s
Linux [ASAN_INT] [rocksdb \| clang] (Errors Ignored)	54m 51s
Linux [LEAK] [rocksdb \| clang]	52m 40s
	10h 54m 49s

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