Remove SIMD.js from V8.

src/ppc/interface-descriptors-ppc.cc

Index: src/ppc/interface-descriptors-ppc.cc
diff --git a/src/ppc/interface-descriptors-ppc.cc b/src/ppc/interface-descriptors-ppc.cc
index 875873f0dc5733d8c88250fe75fbf88dff0d58b4..ed03094dbd6e05c76eeb4f3eb8420202dc1e3ee6 100644
--- a/src/ppc/interface-descriptors-ppc.cc
+++ b/src/ppc/interface-descriptors-ppc.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