[ckan#3126] remove backported subprocess.check_output

ckan/tests/test_coding_standards.py

@@ -15,8 +15,6 @@
 import re
 import subprocess
 
-import ckan.lib.util as util
-
 
 def test_building_the_docs():
     '''There should be no warnings or errors when building the Sphinx docs.
@@ -28,8 +26,12 @@ def test_building_the_docs():
 
     '''
     try:
-        output = util.check_output(
-            ['python', 'setup.py', 'build_sphinx', '--all-files', '--fresh-env'],
+        output = subprocess.check_output(
+            ['python',
+             'setup.py',
+             'build_sphinx',
+             '--all-files',
+             '--fresh-env'],
             stderr=subprocess.STDOUT)
     except subprocess.CalledProcessError as err:
         assert False, (

doc/conf.py

@@ -18,8 +18,6 @@
 import os
 import subprocess
 
-import ckan.lib.util as util
-
 # If your extensions (or modules documented by autodoc) are in another directory,
 # add these directories to sys.path here. If the directory is relative to the
 # documentation root, use os.path.abspath to make it absolute, like shown here.
@@ -126,7 +124,7 @@ def latest_release_tag():
     This requires git to be installed.
 
     '''
-    git_tags = util.check_output(
+    git_tags = subprocess.check_output(
         ['git', 'tag', '-l'], stderr=subprocess.STDOUT).split()
 
     # FIXME: We could do more careful pattern matching against ckan-X.Y.Z here.