Remove outdated comment

Author: nicolasstucki

tests/pos/quotedPatterns.scala

@@ -12,10 +12,6 @@ object Test {
     case '{ ((a: Int) => 3)($y) } => y
     case '{ 1 + ($y: Int)} => y
     case '{ val a = 1 + ($y: Int); 3 } => y
-      // currently gives an unreachable case warning
-      // but only when used in conjunction with the others.
-      // I believe this is because implicit arguments are not taken
-      // into account when checking whether we have already seen an `unapply` before.
     case '{ val $y: Int = $z; println(`$y`); 1 } =>
       val a: quoted.matching.Bind[Int] = y
       z