vk/util: trivial cleanups in vk_icd_gen.py

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/27779>

src/vulkan/util/vk_icd_gen.py

@@ -22,10 +22,10 @@
 
 import argparse
 import json
-import os.path
 import re
 import xml.etree.ElementTree as et
 
+
 def get_xml_patch_version(xml_file):
     xml = et.parse(xml_file)
     for d in xml.findall('.types/type'):
@@ -34,10 +34,11 @@ def get_xml_patch_version(xml_file):
 
         name = d.find('.name')
         if name.text != 'VK_HEADER_VERSION':
-            continue;
+            continue
 
         return name.tail.strip()
 
+
 if __name__ == '__main__':
     parser = argparse.ArgumentParser()
     parser.add_argument('--api-version', required=True,