[oozie] Java Action delete jar file from workflow lib

This happen one someones own workflow when not using a relative path for the 'Jar name' field.

Current workaround, don't use a full path for the jar file or don't put the 'Jar name' into lib, just put it one level up:

/user/hue/oozie/workspaces/_romain_-oozie-35-1382562916.43/lib/hadoop-annotations.jar

But a relative path:

lib/hadoop-annotations.jar