Previously, when assets was managed as a separate library and
repository, its Javadoc was published via Jitpack and linked to from the
documentation at https://bisq.network. This is no longer the case, and
therefore building the Javadoc jar is no longer necessary.
It is no longer necessary to publish Maven metadata about common, core
and other submodules as they are no longer managed as separate libraries
in separate repositories. The only way these modules should be getting
referenced is from within applications in this repository such as
desktop, statsnode, etc. Essentially, we're no longer publishing our
libraries for public consumption.