Remove duplicated bridge_attempt_unsubscribe option

Signed-off-by: Pierre Fersing <pierre.fersing@bleemeo.com>

man/mosquitto.conf.5.xml

@@ -1295,21 +1295,6 @@ topic clients/total in 0 test/mosquitto/org $SYS/broker/
 			<para>The following options are available for all bridges to
 				configure SSL/TLS support.</para>
 			<variablelist>
-				<varlistentry>
-					<term><option>bridge_attempt_unsubscribe</option> [ true | false ]</term>
-					<listitem>
-						<para>If a bridge has topics that have "out" direction,
-							the default behaviour is to send an unsubscribe
-							request to the remote broker on that topic. This
-							means that changing a topic direction from "in" to
-							"out" will not keep receiving incoming messages.
-							Sending these unsubscribe requests is not always
-							desirable, setting
-							<option>bridge_attempt_unsubscribe</option> to
-							<replaceable>false</replaceable> will disable
-							sending the unsubscribe request.</para>
-					</listitem>
-				</varlistentry>
 				<varlistentry>
 					<term><option>bridge_cafile</option> <replaceable>file path</replaceable></term>
 					<listitem>