fix: rm unused and misleading empty impl

[iAmMichaelConnor]

Misleading, but unused empty removed.
(Misleading because the infinity flag will be true which is not empty)

[AztecBot]

Flakey Tests

🤖 says: This CI run detected 2 tests that failed, but were tolerated due to a .test_patterns.yml entry.

\033FLAKED\033 (8;;http://ci.aztec-labs.com/254b441f1cfc9966�254b441f1cfc99668;;�): yarn-project/scripts/run_test.sh ethereum/src/l1_tx_utils/l1_tx_utils.test.ts (68s) (code: 0) group:e2e-p2p-epoch-flakes
\033FLAKED\033 (8;;http://ci.aztec-labs.com/2e04994398045f5b�2e04994398045f5b8;;�):  yarn-project/end-to-end/scripts/run_test.sh simple src/e2e_p2p/inactivity_slash_with_consecutive_epochs.test.ts (335s) (code: 0) group:e2e-p2p-epoch-flakes