[LU-14832] correct comments in cl_env_get

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.16.0
• Severity: 3
• Assignee: Patrick Farrell
• Reporter: Patrick Farrell

Description

The comments on cl_env_get are now dangerously misleading; it was rewritten years ago to no longer find the same environment for a given thread.  Let's fix this.

Fixes: 4533271278 LU-4257 obdclass: Get rid of cl_env hash table