Remove deprecated texprocess dvipng_hack_alpha

dstansby · dstansby · commit 3e66ac0348d2 · 2018-02-23T18:29:14.000Z
diff --git a/doc/api/next_api_changes/2018-02-15-AL-deprecations.rst b/doc/api/next_api_changes/2018-02-15-AL-deprecations.rst
@@ -6,3 +6,4 @@ The following functions and classes are deprecated:
   ``get_realpath_and_stat``),
 - ``cbook.is_numlike`` (use ``isinstance(..., numbers.Number)`` instead),
 - ``mathtext.unichr_safe`` (use ``chr`` instead),
+- ``texmanager.dvipng_hack_alpha``,
diff --git a/lib/matplotlib/texmanager.py b/lib/matplotlib/texmanager.py
@@ -60,26 +60,6 @@
 _log = logging.getLogger(__name__)
 
 
-@mpl.cbook.deprecated("2.1")
-def dvipng_hack_alpha():
-    try:
-        p = Popen([str('dvipng'), '-version'], stdin=PIPE, stdout=PIPE,
-                  stderr=STDOUT, close_fds=(sys.platform != 'win32'))
-        stdout, stderr = p.communicate()
-    except OSError:
-        _log.info('No dvipng was found')
-        return False
-    lines = stdout.decode(sys.getdefaultencoding()).split('\n')
-    for line in lines:
-        if line.startswith('dvipng '):
-            version = line.split()[-1]
-            _log.info('Found dvipng version %s', version)
-            version = distutils.version.LooseVersion(version)
-            return version < distutils.version.LooseVersion('1.6')
-    _log.info('Unexpected response from dvipng -version')
-    return False
-
-
 class TexManager(object):
     """
     Convert strings to dvi files using TeX, caching the results to a directory.
