LU-16565 mdc: Remove ldlm is,set,clear macros

LU-16565 mdc: Remove ldlm is,set,clear macros

Replaces ldlm_{is,set,clear} macros with the direct flag
names.

The patch has been generated with the coccinelle script in
contrib/cocci/ldlm_flags.cocci.

Test-Parameters: trivial
Signed-off-by: Timothy Day <timday@amazon.com>
Change-Id: I03dfce5398c17201e4f18b3c9792daab751fa8e6
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/57547
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: James Simmons <jsimmons@infradead.org>
Reviewed-by: Arshad Hussain <arshad.hussain@aeoncomputing.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>