docs(link cleanup): removes some unnecessary internal doc links (#11420)

Signed-off-by: prmellor <[email protected]>

Author: PaulRMellor

documentation/modules/configuring/con-config-high-volume-messages.adoc

@@ -232,9 +232,3 @@ The example MirrorMaker 2 Grafana dashboards provided with Strimzi show the foll
 * The offset commit timeout in milliseconds
 
 You can use these metrics to gauge whether or not you need to tune your configuration based on the volume of messages.
-
-[role="_additional-resources"]
-.Additional resources
-
-* xref:assembly-metrics-{context}[]
-* xref:using-kafka-connect-with-plug-ins-{context}[]

documentation/modules/configuring/con-config-mirrormaker2-tasks-max.adoc

@@ -78,9 +78,4 @@ The example MirrorMaker 2 Grafana dashboard provided with Strimzi shows the foll
 
 * The number of tasks
 * Replication latency
-* Offset synchronization latency
-
-[role="_additional-resources"]
-.Additional resources
-
-* xref:assembly-metrics-{context}[]
+* Offset synchronization latency