Minor: remove JVM-specific assertion from common test code

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/ExecutionStrategyIT.kt

@@ -69,7 +69,6 @@ abstract class ExecutionStrategyIT : BaseGradleIT() {
             assertContains(finishMessage)
             checkOutput()
             assertNoWarnings()
-            assertFileExists(kotlinClassesDir(subproject = "app") + "foo/B.class")
         }
 
         val classesKt = project.projectDir.getFileByName("classes.kt")