Minor improvements

Author: Linyxus

compiler/src/dotty/tools/dotc/cc/Capability.scala

@@ -784,7 +784,7 @@ object Capabilities:
     abstract class CapMap extends BiTypeMap:
       override def mapOver(t: Type): Type = t match
         case t @ FunctionOrMethod(args, res) if variance > 0 && !t.isAliasFun =>
-          t // `t` should be mapped in this case by a different call to `mapCap`.
+          t // `t` should be mapped in this case by a different call to `toResult`. See [[toResultInResults]].
         case t: (LazyRef | TypeVar) =>
           mapConserveSuper(t)
         case _ =>
@@ -882,4 +882,4 @@ object Capabilities:
       case tp1 => tp1
   end toResultInResults
 
-end Capabilities
+end Capabilities

compiler/src/dotty/tools/dotc/cc/Setup.scala

@@ -18,7 +18,6 @@ import reporting.Message
 import printing.{Printer, Texts}, Texts.{Text, Str}
 import collection.mutable
 import CCState.*
-import dotty.tools.dotc.util.NoSourcePosition
 import CheckCaptures.CheckerAPI
 import NamerOps.methodType
 import NameKinds.{CanThrowEvidenceName, TryOwnerName}