Revert of Add crash instrumentation for crbug.com/621147 (patchset #1 id:1 of...

Revert of Add crash instrumentation for crbug.com/621147 (patchset #1 id:1 of https://codereview.chromium.org/2114743002/ )

Reason for revert:
Bug found and fixed: crrev.com/7614362b

Instrumentation no longer needed.

Original issue's description:
> Add crash instrumentation for crbug.com/621147
>
> BUG=chromium:621147
> LOG=N
> R=ishell@chromium.org,cbruni@chromium.org
>
> Committed: https://crrev.com/5ff508a82299f20a0d9828cf73072a4f4772fab8
> Cr-Commit-Position: refs/heads/master@{#37328}

TBR=verwaest@chromium.org,cbruni@chromium.org,ishell@chromium.org,mlippautz@chromium.org,adamk@chromium.org
BUG=chromium:621147, chromium:624764

Review-Url: https://codereview.chromium.org/2127813002
Cr-Commit-Position: refs/heads/master@{#37552}

src/ic/ic.cc

@@ -2535,27 +2535,6 @@ MaybeHandle<Object> BinaryOpIC::Transition(
     Handle<Object> right) {
   BinaryOpICState state(isolate(), extra_ic_state());
 
-#ifdef V8_TARGET_ARCH_X64
-  // Crash instrumentation for crbug.com/621147.
-  uintptr_t left_raw = reinterpret_cast<uintptr_t>(*left);
-  uintptr_t hole_raw =
-      reinterpret_cast<uintptr_t>(isolate()->heap()->the_hole_value());
-  if ((hole_raw & ((1ull << 32) - 1)) == (left_raw & ((1ull << 32) - 1))) {
-    Code* c = GetCode();
-    Code::Kind kind = c->kind();
-    int instruction_size = c->instruction_size() + 2 * sizeof(Address);
-    byte* instructions = static_cast<byte*>(alloca(instruction_size));
-    Address* start = reinterpret_cast<Address*>(instructions);
-    start[0] = fp();
-    start[1] = pc();
-    for (int i = 2 * sizeof(Address); i < instruction_size; i++) {
-      instructions[i] = c->instruction_start()[i];
-    }
-    isolate()->PushStackTraceAndDie(0xBAAAAAAD, instructions, fp(),
-                                    static_cast<unsigned int>(kind));
-  }
-#endif  // V8_TARGET_ARCH_X64
-
   // Compute the actual result using the builtin for the binary operation.
   Handle<Object> result;
   switch (state.op()) {