Revert "Add regression test for #18497 (#18538)" (#19215)

This reverts commit e9c1445ba0.

scripts/jest/matchers/schedulerTestMatchers.js

@@ -20,9 +20,7 @@ function assertYieldsWereCleared(Scheduler) {
   const actualYields = Scheduler.unstable_clearYields();
   if (actualYields.length !== 0) {
     throw new Error(
-      'Log of yielded values is not empty: ' +
-        JSON.stringify(actualYields) +
-        '. ' +
+      'Log of yielded values is not empty. ' +
         'Call expect(Scheduler).toHaveYielded(...) first.'
     );
   }