[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

mpl_image_labeller/_util.py

@@ -51,7 +51,6 @@ def list_to_onehot(labels, classes):
     lookup = {c: i for i, c in enumerate(classes)}
     arr = np.zeros((len(labels), len(classes)), dtype=bool)
     for i, l in enumerate(labels):
-
         if l is None:
             continue
         elif isinstance(l, str) or not isinstance(l, Iterable):

setup.cfg

@@ -15,9 +15,6 @@ classifiers =
     Natural Language :: English
     Programming Language :: Python :: 3
     Programming Language :: Python :: 3 :: Only
-    Programming Language :: Python :: 3.7
-    Programming Language :: Python :: 3.8
-    Programming Language :: Python :: 3.9
     Programming Language :: Python :: Implementation :: CPython
 project_urls =
     Tracker = https://github.com/ianhi/mpl-image-labeller/issues