Corrected screen mail script and removed [currently] unused code

Not sure what I was thinking with the first part...clearly I wasn't (indeed, the
system I made the initial modification on did not have multiple email
addresses).

.screen/mail

@@ -47,7 +47,7 @@ while [ "$( ps | grep $parent)" ]; do
                 printf "%s", "\005{+ mw}[\005{+b}"
             }
             {
-              total += total + ( $1 - $2 )
+              total  = ( $1 - $2 )
               count += $1
               printf "%d ", total
             }
@@ -58,11 +58,6 @@ while [ "$( ps | grep $parent)" ]; do
                 printf "%s%d%s", "\005{+ my}!", count, "\005{-}"
 
               printf "\n"
-
-              if ( total > 0 )
-                print "mail" > "/tmp/.keyind"
-              else
-                print "" > "/tmp/.keyind"
             }'
 
     sleep 30