Clean up decoding well-known classes.

Test: m test-art-host-gtest
Test: testrunner.py --host --optimizing
Change-Id: I27b4e8f5513511ce1c320e3224dd9c2a40880b69
diff --git a/runtime/class_linker_test.cc b/runtime/class_linker_test.cc
index 64f6e64..05f31b2 100644
--- a/runtime/class_linker_test.cc
+++ b/runtime/class_linker_test.cc
@@ -1711,7 +1711,7 @@
       }
       ASSERT_TRUE(klass == nullptr);
     } else if (expected_class_loader_obj == nullptr) {
-      ASSERT_TRUE(ClassLinker::IsBootClassLoader(soa, klass->GetClassLoader()));
+      ASSERT_TRUE(ClassLinker::IsBootClassLoader(klass->GetClassLoader()));
     } else {
       ASSERT_TRUE(klass != nullptr) << descriptor;
       Handle<mirror::ClassLoader> expected_class_loader(