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;