CreateNewExample: remove unnecessary checks for ITK_FOUND.
CreateNewExample: remove unnecessary checks for ITK_FOUND.

From the find_package documentation:

  "The REQUIRED option stops processing with an error message if the package
  cannot be found."

InsightSoftwareConsortium/ITKExamples,InsightSoftwareConsortium/ITKExamples,InsightSoftwareConsortium/ITKExamples,InsightSoftwareConsortium/ITKExamples,InsightSoftwareConsortium/ITKExamples