Remove legacy files from Iris Flower dataset

MANIFEST.in

xbob/db/base/data/fl/dev/for_models.lst

xbob/db/base/data/fl/dev/for_scores.lst

xbob/db/base/data/fl/dev/for_tnorm.lst

xbob/db/base/data/fl/dev/for_znorm.lst

xbob/db/base/data/fl/eval/for_models.lst

xbob/db/base/data/fl/eval/for_scores.lst

xbob/db/base/data/fl/eval/for_tnorm.lst

xbob/db/base/data/fl/eval/for_znorm.lst

xbob/db/base/data/fl/norm/train_world.lst

xbob/db/base/example/__init__.py

xbob/db/base/example/iris_backprop.py

xbob/db/base/example/iris_lda.py

xbob/db/base/example/iris_rprop.py

xbob/db/base/iris/__init__.py

xbob/db/base/iris/driver.py

xbob/db/base/iris/iris.data

xbob/db/base/iris/iris.names

xbob/db/base/test/__init__.py

xbob/db/base/test/test_examples.py