[ia32] Remove unused Psrlw macro-assembler instruction

Bug: v8:11384
Change-Id: I51ac29ed041bc0491c9c45ca1416d69639d9338e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2720018
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73113}

src/codegen/ia32/macro-assembler-ia32.cc

@@ -2163,15 +2163,6 @@ void TurboAssembler::Psraw(XMMRegister dst, uint8_t shift) {
   }
 }
 
-void TurboAssembler::Psrlw(XMMRegister dst, uint8_t shift) {
-  if (CpuFeatures::IsSupported(AVX)) {
-    CpuFeatureScope scope(this, AVX);
-    vpsrlw(dst, dst, shift);
-  } else {
-    psrlw(dst, shift);
-  }
-}
-
 void TurboAssembler::Psrlq(XMMRegister dst, uint8_t shift) {
   if (CpuFeatures::IsSupported(AVX)) {
     CpuFeatureScope scope(this, AVX);

src/codegen/ia32/macro-assembler-ia32.h

@@ -301,7 +301,6 @@ class V8_EXPORT_PRIVATE TurboAssembler : public TurboAssemblerBase {
   }
   void Pshufd(XMMRegister dst, Operand src, uint8_t shuffle);
   void Psraw(XMMRegister dst, uint8_t shift);
-  void Psrlw(XMMRegister dst, uint8_t shift);
   void Psrlq(XMMRegister dst, uint8_t shift);
 
 // SSE/SSE2 instructions with AVX version.