Business Objects 4.1 BOE.ear Large file size - Websphere

Is there any way to reduce the size of the BOE.ear/BOE.war file deployed to Websphere? The BOE.ear file is over 1 GB in size. If Websphere is running on AIX is it really necessary to have .exe files included in the package that reference a Windows operating system? There are also other "plug-in" files that reference other platforms like linux_64 and solaris. Are these necessary as well? It would be nice if the BOE.ear file could be built specifically for both Web platform and OS.