docs: remove requirements

Author: jankapunkt

docs/conf.py

@@ -28,15 +28,7 @@
 
 # Add any Sphinx extension module names here, as strings. They can be extensions
 # coming with Sphinx (named 'sphinx.ext.*') or your custom ones.
-extensions = [
-    "sphinx.ext.duration",
-    "sphinx.ext.doctest",
-    "sphinx.ext.autodoc",
-    "sphinx.ext.ifconfig",
-    "sphinx.ext.autosummary",
-    "sphinx.ext.todo",
-    "sphinx.ext.intersphinx",
-]
+extensions = ['sphinx.ext.intersphinx', 'sphinx.ext.ifconfig', 'sphinx.ext.todo']
 
 # Add any paths that contain templates here, relative to this directory.
 templates_path = ['_templates']
@@ -102,7 +94,7 @@
 
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
-html_theme = 'sphinx_rtd_theme'
+html_theme = 'default'
 
 # Theme options are theme-specific and customize the look and feel of a theme
 # further.  For a list of options available for each theme, see the
@@ -254,11 +246,7 @@
 
 
 # Example configuration for intersphinx: refer to the Python standard library.
-intersphinx_mapping = {
-    "rtd": ("https://docs.readthedocs.io/en/stable/", None),
-    "python": ("https://docs.python.org/3/", None),
-    "sphinx": ("https://www.sphinx-doc.org/en/master/", None),
-}
+intersphinx_mapping = {'http://docs.python.org/': None}
 
 todo_include_todos = True