[heap] Remove redundant #ifdef scope

Change-Id: I11ffc3197e78a15e38978724da07e10b62857b3b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3582392
Auto-Submit: Dominik Inführ <dinfuehr@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79954}

src/heap/local-heap.cc

@@ -152,9 +152,7 @@ bool LocalHeap::ContainsLocalHandle(Address* location) {
 }
 
 bool LocalHeap::IsHandleDereferenceAllowed() {
-#ifdef DEBUG
   VerifyCurrent();
-#endif
   return IsRunning();
 }
 #endif