[Interpreter] Replace BytecodeRegisterAllocator with a simple bump pointer.

test/unittests/interpreter/bytecode-array-iterator-unittest.cc

Index: test/unittests/interpreter/bytecode-array-iterator-unittest.cc
diff --git a/test/unittests/interpreter/bytecode-array-iterator-unittest.cc b/test/unittests/interpreter/bytecode-array-iterator-unittest.cc
index b844180dc09d261e3f8163a072d592995c859f2c..536122ac173f67e1d9ac57ec4eafea519d08d052 100644
--- a/test/unittests/interpreter/bytecode-array-iterator-unittest.cc
+++ b/test/unittests/interpreter/bytecode-array-iterator-unittest.cc
@@ -54,9 +54,9 @@ TEST_F(BytecodeArrayIteratorTest, IteratesBytecodeArray) {
       .LoadNamedProperty(reg_1, name, feedback_slot)
       .BinaryOperation(Token::Value::ADD, reg_0, 3)
       .StoreAccumulatorInRegister(param)
-      .CallRuntimeForPair(Runtime::kLoadLookupSlotForCall, param, 1, reg_0)
+      .CallRuntimeForPair(Runtime::kLoadLookupSlotForCall, param, reg_0)
       .ForInPrepare(reg_0, reg_0)
-      .CallRuntime(Runtime::kLoadIC_Miss, reg_0, 1)
+      .CallRuntime(Runtime::kLoadIC_Miss, reg_0)
       .Debugger()
       .LoadGlobal(0x10000000, TypeofMode::NOT_INSIDE_TYPEOF)
       .Return();