Remove an invalid DCHECK

Numfuzz runs our tests without the --testing-d8-test-runner flag.

Bug: v8:12068
Change-Id: I8915a3e13c918009b8dd90fa05f050a89a484883
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3085279
Commit-Queue: Georg Neis <neis@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Auto-Submit: Georg Neis <neis@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#76206}

src/compiler-dispatcher/optimizing-compile-dispatcher.h

@@ -61,7 +61,6 @@ class V8_EXPORT_PRIVATE OptimizingCompileDispatcher {
   // requested using %FinalizeOptimization).
   bool finalize() const { return finalize_; }
   void set_finalize(bool finalize) {
-    DCHECK_IMPLIES(!finalize, FLAG_testing_d8_test_runner);
     CHECK(!HasJobs());
     finalize_ = finalize;
   }