Drop all usages of WITH_RUNTIME directive

compiler/test-infrastructure/tests/org/jetbrains/kotlin/test/directives/ConfigurationDirectives.kt

@@ -12,11 +12,5 @@ object ConfigurationDirectives : SimpleDirectivesContainer() {
         "List of kotlin configuration flags"
     )
 
-    val WITH_RUNTIME by directive(
-        description = """
-            Add Kotlin stdlib to classpath
-            This directive is deprecated, use WITH_STDLIB instead
-        """.trimIndent()
-    )
-    val WITH_STDLIB by directive("Add Kotlin runtime to classpath")
+    val WITH_STDLIB by directive("Add Kotlin stdlib to classpath")
 }