Revert of [wasm] Initial signal handler

src/runtime/runtime.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_RUNTIME_RUNTIME_H_
 #define V8_RUNTIME_RUNTIME_H_
 
 #include <memory>
 
 #include "src/allocation.h"
@@ skipping 621 matching lines @@
 
 #define FOR_EACH_INTRINSIC_WASM(F)     \
   F(WasmGrowMemory, 1, 1)              \
   F(WasmMemorySize, 0, 1)              \
   F(ThrowWasmError, 2, 1)              \
   F(ThrowWasmErrorFromTrapIf, 1, 1)    \
   F(WasmThrowTypeError, 0, 1)          \
   F(WasmThrow, 2, 1)                   \
   F(WasmGetCaughtExceptionValue, 1, 1) \
   F(WasmRunInterpreter, 3, 1)          \
-  F(WasmStackGuard, 0, 1)              \
-  F(SetThreadInWasm, 0, 1)             \
-  F(ClearThreadInWasm, 0, 1)
+  F(WasmStackGuard, 0, 1)
 
 #define FOR_EACH_INTRINSIC_RETURN_PAIR(F) \
   F(LoadLookupSlotForCall, 1, 2)
 
 #define FOR_EACH_INTRINSIC_RETURN_TRIPLE(F) \
   F(ForInPrepare, 1, 3)
 
 // Most intrinsics are implemented in the runtime/ directory, but ICs are
 // implemented in ic.cc for now.
 #define FOR_EACH_INTRINSIC_IC(F)             \
@@ skipping 200 matching lines @@
   kMaybeDeopted = 1 << 3,
   kOptimized = 1 << 4,
   kTurboFanned = 1 << 5,
   kInterpreted = 1 << 6,
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_RUNTIME_RUNTIME_H_