[DRMAA-WG] minor IDL issue

[Daniel Gruber]

Delete line 1482 and 1483 because the DRM system version number was moved from the monitoring 
session to the SessionManager:
  
1481 The DRMAA monitoring facility supports four basic units of monitoring:

1482 Properties of the DRM system as a whole (e.g. DRM system version number) that are independent
1483 from the particular session and contact string,

Cheers,

Daniel