update isort to 5.6.4 (#822)

Update isort to 5.6.4 to match cudf. rapidsai/cudf#8755. also remove unused references to nvstrings/nvcategory.

Authors:
  - Christopher Harris (https://github.com/cwharris)

Approvers:
  - GALI PREM SAGAR (https://github.com/galipremsagar)
  - AJ Schmidt (https://github.com/ajschmidt8)

URL: #822

conda/environments/rmm_dev_cuda10.1.yml

@@ -9,7 +9,7 @@ dependencies:
 - cmake-format=0.6.11
 - flake8=3.8.3
 - black=19.10
-- isort=5.0.7
+- isort=5.6.4
 - python>=3.7,<3.9
 - numba>=0.49
 - numpy

conda/environments/rmm_dev_cuda10.2.yml

@@ -9,7 +9,7 @@ dependencies:
 - cmake-format=0.6.11
 - flake8=3.8.3
 - black=19.10
-- isort=5.0.7
+- isort=5.6.4
 - python>=3.7,<3.9
 - numba>=0.49
 - numpy

conda/environments/rmm_dev_cuda11.0.yml

@@ -9,7 +9,7 @@ dependencies:
 - cmake-format=0.6.11
 - flake8=3.8.3
 - black=19.10
-- isort=5.0.7
+- isort=5.6.4
 - python>=3.7,<3.9
 - numba>=0.49
 - numpy

python/dev_requirements.txt

@@ -3,12 +3,12 @@
 clang==8.0.1
 flake8==3.8.3
 black==19.10b0
-isort==5.0.7
+isort==5.6.4
 cmake-format==0.6.11
 numpy
 numba>=0.49
 pytest
 pytest-xdist
 cython>=0.29,<0.30
 wheel
-setuptools
+setuptools

python/setup.cfg

@@ -25,8 +25,6 @@ known_dask=
     distributed
     dask_cuda
 known_rapids=
-    nvstrings
-    nvcategory
     nvtext
     cudf
     cuml