dev-python/pygccxml: Fix build of documentation

- drop no longer used import statement
- fix module file path

Closes: https://bugs.gentoo.org/920767
Signed-off-by: Thomas Beierlein <tomjbe@gentoo.org>

dev-python/pygccxml/files/pygccxml-2.4.0-doc.patch

@@ -0,0 +1,21 @@
+diff --git a/docs/conf.py b/docs/conf.py
+index 071ebb1..2ccec1f 100644
+--- a/docs/conf.py
++++ b/docs/conf.py
+@@ -23,7 +23,6 @@ import importlib.metadata
+ # documentation root, use os.path.abspath to make it absolute, like shown here.
+ sys.path.insert(0, os.path.abspath('.') + "/../src")
+ 
+-from release_utils import utils  # nopep8
+ 
+ # -- General configuration ------------------------------------------------
+ 
+@@ -284,7 +283,7 @@ def run_apidoc(_):
+                 os.path.join(sys.prefix, 'bin', 'sphinx-apidoc'))
+         subprocess.check_call(
+             [cmd_path, '-o', output_path,
+-             os.path.abspath(cur_dir + "/../" + module),
++             os.path.abspath(cur_dir + "/../src/" + module),
+              '--separate', '--force', '--module-first', '--doc-project=API'])
+ 
+ 

dev-python/pygccxml/pygccxml-2.4.0.ebuild

@@ -1,4 +1,4 @@
-# Copyright 1999-2023 Gentoo Authors
+# Copyright 1999-2024 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
@@ -26,6 +26,7 @@ distutils_enable_sphinx docs dev-python/sphinx-rtd-theme
 
 python_prepare_all() {
 	eapply -p0 "${FILESDIR}/${PN}-2.4.0-pyproject.patch"
+	eapply "${FILESDIR}/${PN}-2.4.0-doc.patch"
 	eapply_user
 
 	distutils-r1_python_prepare_all