[cleanup] Fix clang-tidy warnings for missing overrides

Remove a redundant default destructor definition and add final to
another which is overriding a virtual constructor.

Bug: v8:9396
Change-Id: I917f3c6058bfae8cbcd3c4ffb0817f78e8214552
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1807360
Commit-Queue: Dan Elphick <delphick@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Auto-Submit: Dan Elphick <delphick@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63822}

src/compiler/pipeline.cc

@@ -940,7 +940,7 @@ class PipelineCompilationJob final : public OptimizedCompilationJob {
   PipelineCompilationJob(Isolate* isolate,
                          Handle<SharedFunctionInfo> shared_info,
                          Handle<JSFunction> function);
-  ~PipelineCompilationJob();
+  ~PipelineCompilationJob() final;
 
  protected:
   Status PrepareJobImpl(Isolate* isolate) final;
@@ -1165,8 +1165,6 @@ class WasmHeapStubCompilationJob final : public OptimizedCompilationJob {
         pipeline_(&data_),
         wasm_engine_(wasm_engine) {}
 
-  ~WasmHeapStubCompilationJob() = default;
-
  protected:
   Status PrepareJobImpl(Isolate* isolate) final;
   Status ExecuteJobImpl() final;