http://documentation.magnolia-cms.com/reference/configuration.html#Definingproperties

New property:
magnolia.components.config.properties.excluded
Value:
list of components names to be excluded from instantiation of components, seperated by whitespaces (tabs, spaces) or commas.

Examples:
magnolia.components.config.properties.excluded=first.component.to.exclude second.component.to.exclude, third.component.name.to.exclude

The classes in the list are excluded from instantiation of components. This can avoid similar issues as this one: MAGNOLIA-4455 (but don't mention this issue as example, bacause the problematic class com.zeroturnaround.bundled.org.apache.commons.logging.Log is now excluded by default).