shader: remove second IR layer

src/graphics/shader/recompiler/frontend/decode/MemoryOps.cpp

@@ -423,7 +423,7 @@ void DecodeDs(uint32_t pc, std::span<const uint32_t> code, uint32_t word_index,
 	DecodeVectorGpr(vdst, inst.dst);
 	if (inst.opcode == Opcode::DS_READ_U16_D16) {
 		// Native D16 reads update only the selected destination half. Reuse the partial
-		// destination representation so the typed lowering preserves the upper word.
+		// destination representation so typed IR translation preserves the upper word.
 		inst.dst.sdwa_sel = 4u;
 	}
 	DecodeVectorGpr(addr, inst.src0);

src/graphics/shader/recompiler/frontend/decode/VectorAluOps.cpp

@@ -7,7 +7,7 @@ namespace {
 
 using Detail::OpcodeMap;
 
-// These profiles describe the selectors that the current lowering implements. They are not
+// These profiles describe the selectors that the current translator implements. They are not
 // architectural SDWA legality classes.
 enum class Vop2SdwaProfile {
 	None,