Clean up CSTYLEDs

69 CSTYLED BEGINs remain, appx. 30 of which can be removed if cstyle(1)
had a useful policy regarding
  CALL(ARG1,
  	ARG2,
  	ARG3);
above 2 lines. As it stands, it spits out *both*
  sysctl_os.c: 385: continuation line should be indented by 4 spaces
  sysctl_os.c: 385: indent by spaces instead of tabs
which is very cool

Another >10 could be fixed by removing "ulong" &al. handling.
I don't foresee anyone actually using it intentionally
(does it even exist in modern headers? why did it in the first place?).

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #12993

module/zfs/dmu_traverse.c

@@ -809,7 +809,6 @@ traverse_pool(spa_t *spa, uint64_t txg_start, int flags,
 EXPORT_SYMBOL(traverse_dataset);
 EXPORT_SYMBOL(traverse_pool);
 
-/* BEGIN CSTYLED */
 ZFS_MODULE_PARAM(zfs, zfs_, pd_bytes_max, INT, ZMOD_RW,
 	"Max number of bytes to prefetch");
 
@@ -822,6 +821,6 @@ MODULE_PARM_DESC(ignore_hole_birth,
 	"Alias for send_holes_without_birth_time");
 #endif
 
+/* CSTYLED */
 ZFS_MODULE_PARAM(zfs, , send_holes_without_birth_time, INT, ZMOD_RW,
 	"Ignore hole_birth txg for zfs send");
-/* END CSTYLED */