module/zfs: remove zfs_zevent_console and zfs_zevent_cols

zfs_zevent_console committed multiple printk()s per line without
properly continuing them ‒ a single event could easily be fragmented
across over thirty lines, making it useless for direct application

zfs_zevent_cols exists purely to wrap the output from zfs_zevent_console

The niche this was supposed to fill can be better served by something
akin to the all-syslog ZEDLET

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes openzfs#7082 
Closes openzfs#11996

include/os/freebsd/spl/sys/Makefile.am

@@ -8,7 +8,6 @@ KERNEL_H = \
 	ccompile.h \
 	cmn_err.h \
 	condvar.h \
-	console.h \
 	cred.h \
 	ctype.h \
 	debug.h \

include/os/linux/spl/sys/Makefile.am

@@ -6,7 +6,6 @@ KERNEL_H = \
 	callo.h \
 	cmn_err.h \
 	condvar.h \
-	console.h \
 	cred.h \
 	ctype.h \
 	debug.h \

include/sys/fm/util.h

@@ -92,7 +92,6 @@ typedef struct zfs_zevent {
 
 extern void fm_init(void);
 extern void fm_fini(void);
-extern void fm_nvprint(nvlist_t *);
 extern void zfs_zevent_post_cb(nvlist_t *nvl, nvlist_t *detector);
 extern int zfs_zevent_post(nvlist_t *, nvlist_t *, zevent_cb_t *);
 extern void zfs_zevent_drain_all(int *);

man/man5/zfs-module-parameters.5

@@ -3847,28 +3847,6 @@ set.
 .sp
 .RE
 
-.sp
-.ne 2
-.na
-\fBzfs_zevent_cols\fR (int)
-.ad
-.RS 12n
-When zevents are logged to the console use this as the word wrap width.
-.sp
-Default value: \fB80\fR.
-.RE
-
-.sp
-.ne 2
-.na
-\fBzfs_zevent_console\fR (int)
-.ad
-.RS 12n
-Log events to the console
-.sp
-Use \fB1\fR for yes and \fB0\fR for no (default).
-.RE
-
 .sp
 .ne 2
 .na