Remove Android api diagnostic error on Kotlin interface default methods

They don't require java 8 or any other special support to work on Android

#KT-18059 Fixed

idea/testData/android/lint/apiCheck.kt

@@ -476,4 +476,11 @@ fun testJava8() {
 
     // Ok, Kotlin
     mapOf(1 to 2).forEach { (key, value) -> key + value }
+}
+
+interface WithDefault {
+    // Should be ok
+    fun methodWithBody() {
+        return
+    }
 }