diff --git a/doc/api/next_api_changes/removals/18202-DS.rst b/doc/api/next_api_changes/removals/18202-DS.rst
new file mode 100644
index 000000000000..840c28010bfe
--- /dev/null
+++ b/doc/api/next_api_changes/removals/18202-DS.rst
@@ -0,0 +1,6 @@
+`matplotlib.testing` removals
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+- ``testing.is_called_from_pytest`` has been removed.
+- ``jpl_units.Unitdbl.checkUnits`` has been removed. Use
+  ``units not in self.allowed`` instead.
diff --git a/lib/matplotlib/testing/__init__.py b/lib/matplotlib/testing/__init__.py
index 43f8b27ad4f9..9c9c728b7c14 100644
--- a/lib/matplotlib/testing/__init__.py
+++ b/lib/matplotlib/testing/__init__.py
@@ -11,12 +11,6 @@
 _log = logging.getLogger(__name__)
 
 
-@cbook.deprecated("3.2")
-def is_called_from_pytest():
-    """Whether we are in a pytest run."""
-    return getattr(mpl, '_called_from_pytest', False)
-
-
 def set_font_settings_for_testing():
     mpl.rcParams['font.family'] = 'DejaVu Sans'
     mpl.rcParams['text.hinting'] = 'none'
diff --git a/lib/matplotlib/testing/jpl_units/UnitDbl.py b/lib/matplotlib/testing/jpl_units/UnitDbl.py
index 645bc6f6600e..14d77cd8faf7 100644
--- a/lib/matplotlib/testing/jpl_units/UnitDbl.py
+++ b/lib/matplotlib/testing/jpl_units/UnitDbl.py
@@ -228,22 +228,6 @@ def range(start, stop, step=None):
 
         return elems
 
-    @cbook.deprecated("3.2")
-    def checkUnits(self, units):
-        """
-        Check to see if some units are valid.
-
-        = ERROR CONDITIONS
-        - If the input units are not in the allowed list, an error is thrown.
-
-        = INPUT VARIABLES
-        - units     The string name of the units to check.
-        """
-        if units not in self.allowed:
-            raise ValueError("Input units '%s' are not one of the supported "
-                             "types of %s" % (
-                                units, list(self.allowed.keys())))
-
     def checkSameUnits(self, rhs, func):
         """
         Check to see if units are the same.