STYLE: Remove "ITK" from the module name.

Following the new naming rules for ITK remote modules,
the remote module name should not contain the "ITK" prefix.
ENH:  Remote module is OFF by default.

Add "EXCLUDE_FROM_ALL" tag for this remote module.
STYLE: Clean up unnecesssary cmake script.

The headers in the test dir can be found
without explicitly including the directory.
BUG: Remove ITKTransform dependency.

Clean up the module dependency.
MGHIO does not depend on ITKTransform.