[api] Remove deprecated TraceObject::ArgValue::as_bool

Bug: v8:11165
Change-Id: Iff70b6fcf1a68f330750afb5fb94787673de3bbb
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3275565Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77847}

include/libplatform/v8-tracing.h

@@ -37,7 +37,6 @@ const int kTraceMaxNumArgs = 2;
 class V8_PLATFORM_EXPORT TraceObject {
  public:
   union ArgValue {
-    V8_DEPRECATED("use as_uint ? true : false") bool as_bool;
     uint64_t as_uint;
     int64_t as_int;
     double as_double;