Update various configs for _version.py

We control it now, so we shouldn't be excluding it any more.

.codeclimate.yml

@@ -34,6 +34,5 @@ plugins:
         enabled: false
 
 exclude_patterns:
-- "metpy/_version.py"
 - "metpy/io/_nexrad_msgs/msg*.py"
 - "docs/**/*"

.lgtm.yml

@@ -1,6 +1,4 @@
 path_classifiers:
-    generated:
-        - metpy/_version.py
     library:
         - metpy/deprecation.py
     test:

.stickler.yml

@@ -2,6 +2,3 @@ linters:
     flake8:
         ignore: 'F405'
         max-line-length: 95
-files:
-    ignore:
-        - 'metpy/_version.py'

setup.cfg

@@ -105,7 +105,7 @@ mpl-results-path = test_output
 log_print = False
 
 [coverage:run]
-omit = metpy/_version.py,metpy/io/_nexrad_msgs/parse_spec.py
+omit = metpy/io/_nexrad_msgs/parse_spec.py
 
 [doc8]
 ignore-path = docs/build,docs/api/generated,docs/_templates,docs/tutorials,docs/examples