remove VariableDescriptor.inType

(approved by Andrey Breslav)

idea/testData/checker/Properties.jet

@@ -7,7 +7,7 @@
 
  val xx : Int = <error>1 + x</error>
    get() : Int = 1
-   <error>set(value : Long) {}</error>
+   <error>set(value : <error>Long</error>) {}</error>
 
   val p : Int = <error>1</error>
     get() = 1
@@ -25,4 +25,4 @@ class Test() {
     <error>$b</error> = $a
     a = <error>$b</error>
    }
-}
+}