diff --git a/docs/_ext/applyxrefs.py b/docs/_ext/applyxrefs.py
deleted file mode 100644
index ecc67bc877..0000000000
--- a/docs/_ext/applyxrefs.py
+++ /dev/null
@@ -1,77 +0,0 @@
-"""Adds xref targets to the top of files."""
-
-import os
-import sys
-
-testing = False
-
-DONT_TOUCH = (
-    './index.txt',
-)
-
-
-def target_name(fn):
-    if fn.endswith('.txt'):
-        fn = fn[:-4]
-    return '_' + fn.lstrip('./').replace('/', '-')
-
-
-def process_file(fn, lines):
-    lines.insert(0, '\n')
-    lines.insert(0, '.. %s:\n' % target_name(fn))
-    try:
-        with open(fn, 'w') as fp:
-            fp.writelines(lines)
-    except IOError:
-        print("Can't open %s for writing. Not touching it." % fn)
-
-
-def has_target(fn):
-    try:
-        with open(fn, 'r') as fp:
-            lines = fp.readlines()
-    except IOError:
-        print("Can't open or read %s. Not touching it." % fn)
-        return (True, None)
-
-    # print fn, len(lines)
-    if len(lines) < 1:
-        print("Not touching empty file %s." % fn)
-        return (True, None)
-    if lines[0].startswith('.. _'):
-        return (True, None)
-    return (False, lines)
-
-
-def main(argv=None):
-    if argv is None:
-        argv = sys.argv
-
-    if len(argv) == 1:
-        argv.extend('.')
-
-    files = []
-    for root in argv[1:]:
-        for (dirpath, dirnames, filenames) in os.walk(root):
-            files.extend((dirpath, f) for f in filenames)
-    files.sort()
-    files = [os.path.join(p, fn) for p, fn in files if fn.endswith('.txt')]
-    # print files
-
-    for fn in files:
-        if fn in DONT_TOUCH:
-            print("Skipping blacklisted file %s." % fn)
-            continue
-
-        target_found, lines = has_target(fn)
-        if not target_found:
-            if testing:
-                print('%s: %s' % (fn, lines[0]))
-            else:
-                print("Adding xref to %s" % fn)
-                process_file(fn, lines)
-        else:
-            print("Skipping %s: already has a xref" % fn)
-
-if __name__ == '__main__':
-    sys.exit(main())