Only Python 3 is supported: don't create universal wheel

.github/workflows/lint.yml

@@ -16,18 +16,17 @@ jobs:
         uses: actions/cache@v1
         with:
           path: ~/.cache/pip
-          key: ${{ matrix.os }}-pip-${{ hashFiles('**/setup.py') }}
+          key: lint-pip-${{ hashFiles('**/setup.py') }}
           restore-keys: |
-            ${{ matrix.os }}-pip-
+            lint-pip-
 
       - name: pre-commit cache
         uses: actions/cache@v1
         with:
           path: ~/.cache/pre-commit
-          key:
+          key: lint-pre-commit-${{ hashFiles('**/.pre-commit-config.yaml') }}
-            ${{ matrix.os }}-pre-commit-${{ hashFiles('**/.pre-commit-config.yaml') }}
           restore-keys: |
-            ${{ matrix.os }}-pre-commit-
+            lint-pre-commit-
 
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v1

.pre-commit-config.yaml

@@ -1,6 +1,6 @@
 repos:
   - repo: https://github.com/asottile/pyupgrade
-    rev: v1.25.2
+    rev: v1.26.2
     hooks:
       - id: pyupgrade
         args: ["--py3-plus"]
@@ -25,13 +25,13 @@ repos:
     hooks:
       - id: seed-isort-config
 
-  - repo: https://github.com/pre-commit/mirrors-isort
+  - repo: https://github.com/timothycrosley/isort
-    rev: v4.3.21
+    rev: 4.3.21
     hooks:
       - id: isort
 
   - repo: https://github.com/pre-commit/pygrep-hooks
-    rev: v1.4.3
+    rev: v1.4.4
     hooks:
       - id: python-check-blanket-noqa
 

setup.cfg

@@ -1,6 +1,3 @@
-[bdist_wheel]
-universal = 1
-
 [flake8]
 ignore = W503
 max_line_length = 88