Remove unused 'new' folder.

Author: JoeZiminski

doc/conf.py

@@ -120,7 +120,6 @@
     'examples_dirs': ['../examples/tutorials'],
     'gallery_dirs': ['tutorials'],  # path where to save gallery generated examples
     'subsection_order': ExplicitOrder([
-                                       '../examples/tutorials/new',
                                        '../examples/tutorials/core',
                                        '../examples/tutorials/extractors',
                                        '../examples/tutorials/qualitymetrics',