[interpreter] Introduce binary op bytecodes for Smi operand.

src/interpreter/bytecode-pipeline.cc

Index: src/interpreter/bytecode-pipeline.cc
diff --git a/src/interpreter/bytecode-pipeline.cc b/src/interpreter/bytecode-pipeline.cc
index 0ee900bb232b644ba1cdb1ff640816ff8aefb62c..66b8bdf533cf7006cb81c18f4d48f0a37b4a7cef 100644
--- a/src/interpreter/bytecode-pipeline.cc
+++ b/src/interpreter/bytecode-pipeline.cc
@@ -59,17 +59,6 @@ BytecodeNode& BytecodeNode::operator=(const BytecodeNode& other) {
   return *this;
 }
 
-void BytecodeNode::set_bytecode(Bytecode bytecode) {
-  DCHECK_EQ(Bytecodes::NumberOfOperands(bytecode), 0);
-  bytecode_ = bytecode;
-}
-
-void BytecodeNode::set_bytecode(Bytecode bytecode, uint32_t operand0) {
-  DCHECK_EQ(Bytecodes::NumberOfOperands(bytecode), 1);
-  bytecode_ = bytecode;
-  operands_[0] = operand0;
-}
-
 void BytecodeNode::Clone(const BytecodeNode* const other) {
   memcpy(this, other, sizeof(*other));
 }