Cleanup deprecated symbol usages in testData

compiler/testData/codegen/boxWithStdlib/reflection/methodsFromAny/memberExtensionToString.kt

@@ -9,10 +9,10 @@ class A {
 }
 
 fun box(): String {
-    val p = javaClass<A>().kotlin.memberExtensionProperties.single()
+    val p = A::class.java.kotlin.memberExtensionProperties.single()
     return if ("$p" == "var A.(kotlin.String.)id: kotlin.String") "OK" else "Fail $p"
 
-    val q = javaClass<A>().kotlin.declaredFunctions.single()
+    val q = A::class.java.kotlin.declaredFunctions.single()
     if ("$q" != "fun A.(kotlin.Int.)foo(): kotlin.Double") return "Fail q $q"
 
     return "OK"