slackmail: Remove newline at beginning of message

It's not really needed for anything, and may make parsing more
difficult.

Signed-off-by: Anna Schumaker <Anna@OcarinaProject.net>

slackmail.py

@@ -19,7 +19,7 @@ for channel in slack.channels.list():
         continue
 
     chan = ("channel=%s" % channel.id()).rjust(40)
-    text  = [ "", "%s%s" % (repl, chan), ""]
+    text  = [ "%s%s" % (repl, chan), ""]
     text += [ str(channel) ] + [ "" ]
     for message in channel.read():
         text += [ str(message) ]