Removed template.loader.BaseLoader per deprecation timeline.

django/template/engine.py

-import warnings
-
 from django.core.exceptions import ImproperlyConfigured
 from django.utils import lru_cache, six
-from django.utils.deprecation import RemovedInDjango110Warning
 from django.utils.functional import cached_property
 from django.utils.module_loading import import_string
 
@@ -122,16 +119,7 @@ class Engine(object):
 
         if isinstance(loader, six.string_types):
             loader_class = import_string(loader)
-
-            if getattr(loader_class, '_accepts_engine_in_init', False):
-                args.insert(0, self)
-            else:
-                warnings.warn(
-                    "%s inherits from django.template.loader.BaseLoader "
-                    "instead of django.template.loaders.base.Loader. " %
-                    loader, RemovedInDjango110Warning, stacklevel=2)
-
-            return loader_class(*args)
+            return loader_class(self, *args)
         else:
             raise ImproperlyConfigured(
                 "Invalid value in template loaders configuration: %r" % loader)

django/template/loader.py

-import warnings
-
-from django.utils.deprecation import RemovedInDjango110Warning
-
 from . import engines
 from .exceptions import TemplateDoesNotExist
-from .loaders import base
 
 
 def get_template(template_name, using=None):
@@ -62,14 +57,3 @@ def render_to_string(template_name, context=None, request=None, using=None):
 
 def _engine_list(using=None):
     return engines.all() if using is None else [engines[using]]
-
-
-class BaseLoader(base.Loader):
-    _accepts_engine_in_init = False
-
-    def __init__(self, *args, **kwargs):
-        warnings.warn(
-            "django.template.loader.BaseLoader was superseded by "
-            "django.template.loaders.base.Loader.",
-            RemovedInDjango110Warning, stacklevel=2)
-        super(BaseLoader, self).__init__(*args, **kwargs)

django/template/loaders/base.py

@@ -6,8 +6,6 @@ from django.utils.inspect import func_supports_parameter
 
 
 class Loader(object):
-    # Only used to raise a deprecation warning. Remove in Django 1.10.
-    _accepts_engine_in_init = True
 
     def __init__(self, engine):
         self.engine = engine

docs/ref/templates/api.txt

@@ -968,11 +968,6 @@ loaders. Custom ``Loader`` classes should inherit from
 ``django.template.loaders.base.Loader`` and define the ``get_contents()`` and
 ``get_template_sources()`` methods.
 
-.. versionchanged:: 1.8
-
-    ``django.template.loaders.base.Loader`` used to be defined at
-    ``django.template.loader.BaseLoader``.
-
 .. versionchanged:: 1.9
 
     In previous versions of Django, custom loaders defined a single method: