Temporarily remove isInitialized and tests, but keep the implementation

This is needed because we want the compiler code to stay as much the
same in master and in 1.2 as possible

compiler/testData/codegen/box/properties/lateinit/isInitializedAndDeinitialize/innerSubclass.kt

@@ -1,35 +0,0 @@
-// TARGET_BACKEND: JVM
-// LANGUAGE_VERSION: 1.2
-// WITH_RUNTIME
-
-open class Foo {
-    lateinit var bar: String
-
-    private lateinit var baz: String
-
-    fun test(): String {
-        val isBarInitialized: () -> Boolean = { this::bar.isInitialized }
-        if (isBarInitialized()) return "Fail 1"
-        bar = "bar"
-        if (!isBarInitialized()) return "Fail 2"
-        baz = "baz"
-        return InnerSubclass().testInner()
-    }
-
-    inner class InnerSubclass : Foo() {
-        fun testInner(): String {
-            // This is access to InnerSubclass.bar which is inherited from Foo.bar
-            if (this::bar.isInitialized) return "Fail 3"
-            bar = "OK"
-            if (!this::bar.isInitialized) return "Fail 4"
-
-            // This is access to Foo.bar declared lexically above
-            if (!this@Foo::bar.isInitialized) return "Fail 5"
-            return "OK"
-        }
-    }
-}
-
-fun box(): String {
-    return Foo().test()
-}