Revert of Allow lexically declared "arguments" in function scope in sloppy mode.

test/cctest/interpreter/test-bytecode-generator.cc

Index: test/cctest/interpreter/test-bytecode-generator.cc
diff --git a/test/cctest/interpreter/test-bytecode-generator.cc b/test/cctest/interpreter/test-bytecode-generator.cc
index f1aa244c4fc4472cbe842e9a9b83fa294b5982a8..c71e3ef034e1ee62dd6e5f0e474088e5af68f5c7 100644
--- a/test/cctest/interpreter/test-bytecode-generator.cc
+++ b/test/cctest/interpreter/test-bytecode-generator.cc
@@ -56,13 +56,12 @@
 #define REPEAT_64_UNIQUE_VARS() REPEAT_32_UNIQUE_VARS() REPEAT_32_UNIQUE_VARS()
 #define REPEAT_128_UNIQUE_VARS() REPEAT_64_UNIQUE_VARS() REPEAT_64_UNIQUE_VARS()
 
-#define REPEAT_250_UNIQUE_VARS() \
+#define REPEAT_249_UNIQUE_VARS() \
   REPEAT_128_UNIQUE_VARS()       \
   REPEAT_64_UNIQUE_VARS()        \
   REPEAT_32_UNIQUE_VARS()        \
   REPEAT_16_UNIQUE_VARS()        \
   REPEAT_8_UNIQUE_VARS()         \
-  UNIQUE_VAR()                   \
   UNIQUE_VAR()
 
 static const char* kGoldenFileDirectory =
@@ -1354,7 +1353,7 @@
     "{ let b = 2; return function() { a + b; }; }\n",
 
     "'use strict';\n"
-    REPEAT_250_UNIQUE_VARS()
+    REPEAT_249_UNIQUE_VARS()
     "eval();\n"
     "var b = 100;\n"
     "return b\n",