Remove the specialized handling for importing V128.Shuffle as AdvSimd.ExtractVector128

Author: tannergooding

src/mono/mono/mini/simd-intrinsics.c

@@ -2703,20 +2703,6 @@ emit_sri_vector (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsi
 }
 MonoInst *new_args[3];
 new_args [0] = args [0];
-if (COMPILE_LLVM (cfg)) {
-if ((get_xconst_int_elem (cfg, args [1], MONO_TYPE_U8, 0) == 0x300000002) &&
-(get_xconst_int_elem (cfg, args [1], MONO_TYPE_U8, 1) == 0x100000000)) {
-etype = m_class_get_byval_arg (mono_defaults.uint64_class);
-klass = create_class_instance ("System.Runtime.Intrinsics", "Vector128`1", etype);
-new_args [1] = args [0];
-EMIT_NEW_ICONST (cfg, new_args [2], 1);
-MonoInst* ins = emit_simd_ins (cfg, klass, OP_ARM64_EXT, new_args [0]->dreg, new_args [1]->dreg);
-ins->inst_c0 = 0;
-ins->inst_c1 = MONO_TYPE_U8;
-ins->sreg3 = new_args [2]->dreg;
-return ins;
-}
-}
 int esize = mono_class_value_size (mono_class_from_mono_type_internal (etype), NULL);
 int ecount = (vector_size / 8) / esize;
 guint64 value = 0;