mvn-scalaxb: Remove repositories section from pom.xml.
mvn-scalaxb: Remove repositories section from pom.xml.

The repositories section is no longer required in the pom
because artifacts are now sync'ed to central.

Banno/scalaxb,justjoheinz/scalaxb,Banno/scalaxb,briantopping/scalaxb,eed3si9n/scalaxb,Fayho/scalaxb,briantopping/scalaxb,briantopping/scalaxb,Fayho/scalaxb,Fayho/scalaxb,eed3si9n/scalaxb,Banno/scalaxb,justjoheinz/scalaxb,eed3si9n/scalaxb,justjoheinz/scalaxb