Minor: remove redundant call

Author: AlexeyTsvetkov

compiler/incremental-compilation-impl/test/org/jetbrains/kotlin/incremental/BuildLogParserParametrizedIT.kt

@@ -63,7 +63,7 @@ class BuildLogParserParametrizedTest {
         @JvmStatic
         fun data(): List<Array<String>> {
             val directories = TEST_ROOT.listFiles().filter { it.isDirectory }
-            return directories.map { arrayOf(it.name) }.toList()
+            return directories.map { arrayOf(it.name) }
         }
     }
 }