deprecating types after colon

compiler/testData/diagnostics/tests/numbers/doublesInSimpleConstraints.kt

@@ -1,3 +1,5 @@
+// !CHECK_TYPE
+
 package a
 
 fun <T> id(t: T): T = t
@@ -8,13 +10,13 @@ fun test() {
     val <!UNUSED_VARIABLE!>a<!>: Float = id(2.0.toFloat())
 
     val b = id(2.0)
-    b: Double
+    checkSubtype<Double>(b)
 
     val c = either<Number>(1, 2.3)
-    c: Number
+    checkSubtype<Number>(c)
 
     val d = either(11, 2.3)
-    d: Any
+    checkSubtype<Any>(d)
 
     val <!UNUSED_VARIABLE!>e<!>: Float = <!TYPE_INFERENCE_EXPECTED_TYPE_MISMATCH!>id<!>(1)
 }

compiler/testData/diagnostics/tests/numbers/numbersInSimpleConstraints.kt

@@ -17,10 +17,10 @@ fun test() {
     val c: Int = <!TYPE_INFERENCE_EXPECTED_TYPE_MISMATCH!>id<!>(9223372036854775807)
 
     val d = id(22)
-    d: Int
+    checkSubtype<Int>(d)
 
     val e = id(9223372036854775807)
-    e checkType { it : _<Long> }
+    e checkType { _<Long>() }
 
     val f: Byte = either(1, 2)
 
@@ -31,7 +31,7 @@ fun test() {
     <!TYPE_INFERENCE_TYPE_CONSTRUCTOR_MISMATCH!>otherGeneric<!>(<!CONSTANT_EXPECTED_TYPE_MISMATCH!>1<!>)
 
     val r = either(1, "")
-    r checkType { it : _<Comparable<*>> }
+    r checkType { _<Comparable<*>>() }
 
     use(a, b, c, d, e, f, g, r)
 }
@@ -47,7 +47,7 @@ fun testExactBound(invS: Inv<String>, invI: Inv<Int>, invB: Inv<Byte>) {
     exactBound(1, invI)
 
     val b = exactBound(1, invB)
-    b checkType { it : _<Byte> }
+    b checkType { _<Byte>() }
 }
 
 trait Cov<out T>
@@ -56,10 +56,10 @@ fun <T> lowerBound(t: T, l : Cov<T>): T = throw Exception("$t $l")
 
 fun testLowerBound(cov: Cov<String>, covN: Cov<Number>) {
     val r = lowerBound(1, cov)
-    r checkType { it : _<Comparable<*>> }
+    r checkType { _<Comparable<*>>() }
 
     val n = lowerBound(1, covN)
-    n checkType { it : _<Number> }
+    n checkType { _<Number>() }
 }
 
 trait Contr<in T>
@@ -70,8 +70,8 @@ fun testUpperBound(contrS: Contr<String>, contrB: Contr<Byte>, contrN: Contr<Num
     <!TYPE_INFERENCE_CONFLICTING_SUBSTITUTIONS!>upperBound<!>(1, contrS)
 
     val n = upperBound(1, contrN)
-    n checkType { it : _<Int> }
+    n checkType { _<Int>() }
 
     val b = upperBound(1, contrB)
-    b checkType { it : _<Byte> }
+    b checkType { _<Byte>() }
 }