Remove SIMD.js from V8.

src/x64/interface-descriptors-x64.cc

Index: src/x64/interface-descriptors-x64.cc
diff --git a/src/x64/interface-descriptors-x64.cc b/src/x64/interface-descriptors-x64.cc
index 2b13c05366d38f4b5caf4938cdfb551884f2cc50..c784edd7b54ca2fcacd04398b63c4cc801523f81 100644
--- a/src/x64/interface-descriptors-x64.cc
+++ b/src/x64/interface-descriptors-x64.cc
@@ -195,14 +195,6 @@ void AllocateHeapNumberDescriptor::InitializePlatformSpecific(
   data->InitializePlatformSpecific(0, nullptr, nullptr);
 }
 
-#define SIMD128_ALLOC_DESC(TYPE, Type, type, lane_count, lane_type) \
-  void Allocate##Type##Descriptor::InitializePlatformSpecific(      \
-      CallInterfaceDescriptorData* data) {                          \
-    data->InitializePlatformSpecific(0, nullptr, nullptr);          \
-  }
-SIMD128_TYPES(SIMD128_ALLOC_DESC)
-#undef SIMD128_ALLOC_DESC
-
 void ArrayConstructorDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   // kTarget, kNewTarget, kActualArgumentsCount, kAllocationSite