Revert "ENH: Use named inputs in BinaryReconstruction filters."

The reverted patch broke the method
ProcessObject::SetInput. Previously, filter->SetInput() would work for
setting the input images, it no longer does. SimpleITK uses this
method to set filter inputs. These filter silently compile and give a
run-time exception with the prior patch applied.

This reverts commit 285f3ac2d50c54803657458ee529a7c8ce602150.

Change-Id: I99fd84cbfc2da8714dbbb1343e3b8faf55ad4f29
Merge topic 'NamedInputNotBackwardsCompatible'

32b4659 Revert "ENH: Use named inputs in BinaryReconstruction filters."