remove distutils

setup.py

@@ -12,9 +12,9 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import distutils.dir_util
 from setuptools import setup
 import os
+import shutil
 import sys
 
 
@@ -26,9 +26,9 @@
         this_dir = os.path.dirname(os.path.abspath(__file__))
         build_dir = os.path.join(this_dir, "build")
         if os.path.isdir(build_dir):
-            distutils.dir_util.remove_tree(build_dir)
+            shutil.rmtree(build_dir)
         egg_dir = os.path.join(
             this_dir, "sPyNNaker_visualisers.egg-info")
         if os.path.isdir(egg_dir):
-            distutils.dir_util.remove_tree(egg_dir)
+            shutil.rmtree(egg_dir)
     setup()