POM: bump to pom-scifio 1.3

In particular, this bumps to scifio 0.16.1 which includes the commit:
https://github.com/scifio/scifio/commit/6280e0586baa7c516c1fe1b322e826217e462dc8

Which allows removal of the now-redundant getFormatName() method.
BioFormatsFormat: remove getFormatName override

It is now redundant, since the default format name is pulled from the
@Plugin annotation's name attribute.