remove if

tools/benchmark/src/mocha/customOutputRunner.ts

@@ -6,7 +6,6 @@
 import { Test } from "mocha";
 
 import {
-	isInPerformanceTestingMode,
 	type BenchmarkDescription,
 	type MochaExclusiveOptions,
 	type Titled,
@@ -64,10 +63,6 @@ export function benchmarkCustom(options: CustomBenchmarkOptions): Test {
 			// When running them without perf mode, we need to re-throw the error for Mocha to do its normal thing when a test throws.
 			test.emit("benchmark end", benchmarkError);
 
-			if (isInPerformanceTestingMode) {
-				return;
-			}
-
 			throw error;
 		}