Remove l2arc_nocompress from zfs-module-parameters(5)

Parameter was removed in d3c2ae1
(OpenZFS 6950 - ARC should cache compressed data)

Reviewed by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: DHE <git@dehacked.net>
Closes openzfs#7043

man/man5/zfs-module-parameters.5

@@ -96,17 +96,6 @@ successfully compressed before writing. A value of 100 disables this feature.
 Default value: \fB200\fR.
 .RE
 
-.sp
-.ne 2
-.na
-\fBl2arc_nocompress\fR (int)
-.ad
-.RS 12n
-Skip compressing L2ARC buffers
-.sp
-Use \fB1\fR for yes and \fB0\fR for no (default).
-.RE
-
 .sp
 .ne 2
 .na