[interpreter] Remove BytecodeArrayBuilder::Illegal().

src/interpreter/bytecode-array-builder.cc

Index: src/interpreter/bytecode-array-builder.cc
diff --git a/src/interpreter/bytecode-array-builder.cc b/src/interpreter/bytecode-array-builder.cc
index ecdac5597124682f26c6c9b2b42c3ef6f5b96fb6..ef26fd8f094e49ba5ae2c9d769da33c205bca6a0 100644
--- a/src/interpreter/bytecode-array-builder.cc
+++ b/src/interpreter/bytecode-array-builder.cc
@@ -766,11 +766,6 @@ BytecodeArrayBuilder& BytecodeArrayBuilder::Return() {
   return *this;
 }
 
-BytecodeArrayBuilder& BytecodeArrayBuilder::Illegal() {
-  Output(Bytecode::kIllegal);
-  return *this;
-}
-
 BytecodeArrayBuilder& BytecodeArrayBuilder::Debugger() {
   Output(Bytecode::kDebugger);
   return *this;