tps: commented the comma-removal in the serial number

It is not needed because the new bar code reader don't put
a comma between the readings.

tps.py

@@ -135,7 +135,7 @@ class Suite(object):
         if not self.serial:
             msg = 'invalid serial number [{0}]'.format(self.serial)
             raise TpsInvalid(msg)
-	self.serial = self.serial.strip(',')
+	# self.serial = self.serial.strip(',')
         if not self.extra_serial:
 		self.extra_serial = '0000'
         else :