[WASM SIMD] Implement primitive shuffles.

src/arm/macro-assembler-arm.h

Index: src/arm/macro-assembler-arm.h
diff --git a/src/arm/macro-assembler-arm.h b/src/arm/macro-assembler-arm.h
index a69b918ed801b15092c9320263a9853d3f51cb5e..2c89636bc460aaa17c86719590368d2060ea75ef 100644
--- a/src/arm/macro-assembler-arm.h
+++ b/src/arm/macro-assembler-arm.h
@@ -574,8 +574,6 @@ class MacroAssembler: public Assembler {
                    NeonDataType dt, int lane);
   void ReplaceLane(QwNeonRegister dst, QwNeonRegister src,
                    SwVfpRegister src_lane, Register scratch, int lane);
-  void Swizzle(QwNeonRegister dst, QwNeonRegister src, Register scratch,
-               NeonSize size, uint32_t lanes);
 
   void LslPair(Register dst_low, Register dst_high, Register src_low,
                Register src_high, Register scratch, Register shift);