no more conversions in MethodCallExpression

tests/testData/ast/issues/file/kt-543-boxed.kt

@@ -4,8 +4,8 @@ open fun putInt(i : Int?) : Unit {
 }
 open fun test() : Unit {
 var b : Byte = 10
-putInt((b).toInt())
+putInt(b.toInt())
 var b2 : Byte? = 10
-putInt((b2).toInt())
+putInt(b2.toInt())
 }
 }

tests/testData/ast/issues/file/kt-543.kt

@@ -4,6 +4,6 @@ open fun putInt(i : Int) : Unit {
 }
 open fun test() : Unit {
 var b : Byte = 10
-putInt((b).toInt())
+putInt(b.toInt())
 }
 }

tests/testData/ast/issues/file/kt-809.kt

@@ -13,7 +13,7 @@ open class Test() {
 open fun putInt(i : Int) : Unit {
 }
 open fun test() : Unit {
-putInt((One.myContainer?.myInt).sure())
+putInt(One.myContainer?.myInt!!)
 IntContainer(One.myContainer?.myInt!!)
 }
 }