[Cleanup] Delete deprecated RegisterDefaultTrapHandler API.

BUG=v8:8562

Change-Id: I66b729aeb306ecfbf92ee6e992c3abb6f854949c
Reviewed-on: https://chromium-review.googlesource.com/c/1449733Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59290}

include/v8.h

@@ -8671,13 +8671,6 @@ class V8_EXPORT V8 {
                                                 void* context));
 #endif  // V8_OS_POSIX
 
-  /**
-   * Enable the default signal handler rather than using one provided by the
-   * embedder.
-   */
-  V8_DEPRECATED("Use EnableWebAssemblyTrapHandler",
-                static bool RegisterDefaultSignalHandler());
-
   /**
    * Activate trap-based bounds checking for WebAssembly.
    *

src/api.cc

@@ -5823,10 +5823,6 @@ bool TryHandleWebAssemblyTrapWindows(EXCEPTION_POINTERS* exception) {
 }
 #endif
 
-bool V8::RegisterDefaultSignalHandler() {
-  return v8::internal::trap_handler::RegisterDefaultTrapHandler();
-}
-
 bool V8::EnableWebAssemblyTrapHandler(bool use_v8_signal_handler) {
   return v8::internal::trap_handler::EnableTrapHandler(use_v8_signal_handler);
 }