Fix tox analysis.

Author: Fernando

SoftLayer/managers/hardware.py

@@ -1005,11 +1005,9 @@ def _get_disk_price_detail(self, disk_data, upgrade_prices, disk_channel, disk_t
         """
         if disk_data.get('description') == disk_type:
             if "add" in disk_type:
-                disk_type_description = "Unable to add the disk because this already exists."
+                raise SoftLayerError("Unable to add the disk because this already exists.")
             else:
-                disk_type_description = "Unable to resize the disk because this does not exists."
-
-            raise SoftLayerError(disk_type_description)
+                raise SoftLayerError("Unable to resize the disk because this does not exists.")
         else:
             price_id = self._get_prices_for_upgrade_option(upgrade_prices, disk_channel,
                                                            disk_data.get('capacity'))