How to exclude a transitive haxelib dependency

In my project I am using extension-admob which has a dependency to extension-android-support-v4. Since I am only targeting Android SKD version 14 or higher I do not need the android-support-v4.jar.
Is there a generic way to exclude such unneeded transitive dependencies in the project.xml like it is possible with other build tools (Maven, Gradl, etc)?

Perhaps the “include.xml” for the extension could accept a define, like an unless="EXCLUDE_SUPPORT_JAR" or something on the tag that copies the file?