Remove GenerateBooleanCheck() since we have a boolean map now.

src/ia32/stub-cache-ia32.cc

Index: src/ia32/stub-cache-ia32.cc
diff --git a/src/ia32/stub-cache-ia32.cc b/src/ia32/stub-cache-ia32.cc
index b49a8e303e08d2bc21e866c79a271872fcfd3652..adc8cd59aa9fef87c7aa1dfd6c80ce3632ff5e40 100644
--- a/src/ia32/stub-cache-ia32.cc
+++ b/src/ia32/stub-cache-ia32.cc
@@ -1177,17 +1177,6 @@ void LoadStubCompiler::GenerateLoadInterceptor(
 }
 
 
-void StubCompiler::GenerateBooleanCheck(Register object, Label* miss) {
-  Label success;
-  // Check that the object is a boolean.
-  __ cmp(object, factory()->true_value());
-  __ j(equal, &success);
-  __ cmp(object, factory()->false_value());
-  __ j(not_equal, miss);
-  __ bind(&success);
-}
-
-
 Handle<Code> StoreStubCompiler::CompileStoreCallback(
     Handle<JSObject> object,
     Handle<JSObject> holder,