[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 118044675cb47f43cc4107dadf5a9abbcc0e2c07..efa84995221f4e684034f1c5e103916d69a571be 100644
--- a/src/arm/macro-assembler-arm.h
+++ b/src/arm/macro-assembler-arm.h
@@ -571,8 +571,6 @@ 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);