Drop support for old ...configuration.PackageRegistryBackend/registry layer
Drop support for old ...configuration.PackageRegistryBackend/registry layer

...that cannot appear in a LO 4 user profile.

Change-Id: I91eaf50289119fd26a54a99067ecfd3f323d61d6

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core