LU-17000 misc: remove Coverity annotations

LU-17000 misc: remove Coverity annotations

These Coverity function annotations were added
around 10 years ago. Since then, Coverity seems
to produce less false positives. Out of about 20
annotations, only 3 warnings get surpressed.
Thus, the applicability of these annotations
should be re-evaluated.

Coverity has more advanced tools now for reducing
false positives. Various Lustre functions and
macros could be modeled rather than using
function annotations. But first, we need to get
a good idea of what kinds of false postives are
being generated.

https://scan.coverity.com/tune

Test-Parameters: trivial
Signed-off-by: Timothy Day <timday@amazon.com>
Change-Id: Ibcb9cf55574675e20b13a4f7a1b9142a3b75e262
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/51793
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Patrick Farrell <pfarrell@whamcloud.com>
Reviewed-by: James Simmons <jsimmons@infradead.org>
Reviewed-by: Oleg Drokin <green@whamcloud.com>