Remove a weird symbol I accidentally added in AbsErrorPhase.scala

src/main/scala/daisy/analysis/AbsErrorPhase.scala

@@ -98,7 +98,7 @@ object AbsErrorPhase extends DaisyPhase {
 
         } else {
           // do nothing to x (which may get us inconsistent state,
-x          // if x has already attached error )
+          // if x has already attached error )
           if (x.hasError) reporter.warning("Node has errors attached," +
             "but you are asking me to ignore them.")
           else {