diff --git a/packages/beacon-state-transition/test/perf/altair/epoch/processParticipationFlagUpdates.test.ts b/packages/beacon-state-transition/test/perf/altair/epoch/processParticipationFlagUpdates.test.ts
deleted file mode 100644
index bdcded583d1d..000000000000
--- a/packages/beacon-state-transition/test/perf/altair/epoch/processParticipationFlagUpdates.test.ts
+++ /dev/null
@@ -1,18 +0,0 @@
-import {itBench} from "@dapplion/benchmark";
-import {altair} from "../../../../src";
-import {StateAltair} from "../../types";
-import {generatePerfTestCachedStateAltair, numValidators} from "../../util";
-
-// PERF: Cost = 'proportional' to $VALIDATOR_COUNT. Just copies a tree and recreates another
-
-describe("altair processParticipationFlagUpdates", () => {
-  const vc = numValidators;
-
-  itBench<StateAltair, StateAltair>({
-    id: `altair processParticipationFlagUpdates - ${vc} anycase`,
-    yieldEventLoopAfterEach: true, // So SubTree(s)'s WeakRef can be garbage collected https://github.com/nodejs/node/issues/39902
-    before: () => generatePerfTestCachedStateAltair({goBackOneSlot: true}),
-    beforeEach: (state) => state.clone(),
-    fn: (state) => altair.processParticipationFlagUpdates(state),
-  });
-});