Kotlin: Fix inherited-callee test

We can't define the same classes in Java and Kotlin.

Author: igfoo

java/ql/test/kotlin/library-tests/inherited-callee/Test.kt

@@ -4,13 +4,13 @@ open class TestKt {
 
 }
 
-interface ParentIf {
+interface ParentIfK {
 
   fun inheritedInterfaceMethodK()
 
 }
 
-interface ChildIf : ParentIf {
+interface ChildIfK : ParentIfK {
 
 
 }
@@ -24,7 +24,7 @@ class ChildKt : TestKt() {
     c.equals(c)
     c.hashCode()
     c.inheritMe()
-    val c2: ParentIf? = null
+    val c2: ParentIfK? = null
     c2?.inheritedInterfaceMethodK()
 
   }

java/ql/test/kotlin/library-tests/inherited-callee/test.expected

@@ -7,4 +7,4 @@
 | Test.kt:24:7:24:15 | equals(...) | equals | Object |
 | Test.kt:25:7:25:16 | hashCode(...) | hashCode | Object |
 | Test.kt:26:7:26:17 | inheritMe(...) | inheritMe | TestKt |
-| Test.kt:28:9:28:35 | inheritedInterfaceMethodK(...) | inheritedInterfaceMethodK | ParentIf |
+| Test.kt:28:9:28:35 | inheritedInterfaceMethodK(...) | inheritedInterfaceMethodK | ParentIfK |