Remove Google Analytics from the Burr Website (Fixes #592)

docs/conf.py

diff --git a/docs/conf.py b/docs/conf.py
index ba07505..f56a543 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -22,7 +22,6 @@
 
 # -- Project information -----------------------------------------------------
 # https://www.sphinx-doc.org/en/master/usage/configuration.html#project-information
-import os
 import subprocess
 
 apache_footer = """
@@ -52,10 +51,6 @@
     "sphinx_toolbox.collapse",
 ]
 
-if os.getenv("GITHUB_ACTIONS"):  # only add googleanalytics if building on GitHub Actions
-    extensions.append("sphinxcontrib.googleanalytics")
-    googleanalytics_id = "G-20Z3J1CR22"
-
 templates_path = ["_templates"]
 exclude_patterns = ["_build", "Thumbs.db", ".DS_Store"]