[DOCS] Remove scale attributes (#289)

Author: lcawl

docs/en/stack/monitoring/how-monitoring-works.asciidoc

@@ -14,13 +14,13 @@ activities from impacting the performance of your production cluster. The
 following diagram illustrates a typical monitoring architecture with separate 
 production and monitoring clusters:
 
-image::monitoring/images/architecture10.png["A typical monitoring environment",width="100%"]
+image::monitoring/images/architecture10.png["A typical monitoring environment"]
 
 In 6.4 and later, you can use {metricbeat} to collect and ship data about 
 {kib}, rather than routing it through {es}. In 6.5 and later, you can also use 
 {metricbeat} to collect and ship data about {es}. For example:
 
-image::monitoring/images/architecture20.png[A typical monitoring environment that includes {metricbeat},scale=50]
+image::monitoring/images/architecture20.png[A typical monitoring environment that includes {metricbeat}]
 
 If you have at least a gold license, you can route data from multiple production
 clusters to a single monitoring cluster. For more information about the