Removed LM.initialize() -- switched to internal initialization of all LM's.

Removed LM.initialize() -- switched to internal initialization of all LM's.
Did initialization from constructor, as that appeared sufficient for all of them.
Should for any LM, initialization not be available until the parentLM set,
then we just need to do this process within a setParent() override.

Also removed calls to superclass initialization, because as yet no initialization
was occurring in those superclasses.

git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/trunk@198719 13f79535-47bb-0310-9956-ffa450edef68