deprecating types after colon

compiler/testData/diagnostics/tests/dataFlowInfoTraversal/BinaryExpressionContainsConvention.kt

@@ -1,5 +1,7 @@
+// !CHECK_TYPE
+
 fun foo(x: Number): Boolean {
     val result = (x as Int) in 1..5
-    <!DEBUG_INFO_SMARTCAST!>x<!> : Int
+    checkSubtype<Int>(<!DEBUG_INFO_SMARTCAST!>x<!>)
     return result
 }