[codeclimate] update config

.codeclimate.yml

@@ -1,19 +1,15 @@
-engines:
+version: "2"
-  duplication:
+checks:
-    enabled: true
+plugins:
-    config:
-      languages:
-      - python
   fixme:
     enabled: true
   radon:
     enabled: true
-ratings:
+    config:
-  paths:
+      python_version: 3
-  - "**.py"
+      threshold: "D"
 exclude_patterns:
-- tests/
+- "tests/"
-  versioneer.py
+- "versioneer.py"
-  bumblebee_status/_version.py
+- "bumblebee_status/_version.py"
-  setup.py
+- "setup.py"
-