[WASM SIMD] Remove opcodes that are slow on some platforms.

src/compiler/simd-scalar-lowering.cc

Index: src/compiler/simd-scalar-lowering.cc
diff --git a/src/compiler/simd-scalar-lowering.cc b/src/compiler/simd-scalar-lowering.cc
index 8f967788db7dcea548cbb97022dc798a774690a6..10c43f1aa38f1b077f7fe042478b51532b5577c0 100644
--- a/src/compiler/simd-scalar-lowering.cc
+++ b/src/compiler/simd-scalar-lowering.cc
@@ -96,7 +96,6 @@ void SimdScalarLowering::LowerGraph() {
   V(F32x4Add)                       \
   V(F32x4Sub)                       \
   V(F32x4Mul)                       \
-  V(F32x4Div)                       \
   V(F32x4Min)                       \
   V(F32x4Max)
 
@@ -646,7 +645,6 @@ void SimdScalarLowering::LowerNode(Node* node) {
       F32X4_BINOP_CASE(Add)
       F32X4_BINOP_CASE(Sub)
       F32X4_BINOP_CASE(Mul)
-      F32X4_BINOP_CASE(Div)
       F32X4_BINOP_CASE(Min)
       F32X4_BINOP_CASE(Max)
 #undef F32X4_BINOP_CASE
@@ -657,7 +655,6 @@ void SimdScalarLowering::LowerNode(Node* node) {
   }
       F32X4_UNOP_CASE(Abs)
       F32X4_UNOP_CASE(Neg)
-      F32X4_UNOP_CASE(Sqrt)
 #undef F32x4_UNOP_CASE
     case IrOpcode::kF32x4SConvertI32x4: {
       LowerUnaryOp(node, SimdType::kInt32, machine()->RoundInt32ToFloat32());