fix: invalid imports

Author: lfoppiano

grobid_client/format/TEI2LossyJSON.py

@@ -875,8 +875,6 @@ def get_refs_with_offsets(element):
     def _clean_text(text: str) -> str:
         if not text:
             return ""
-        import re
-        import html
         text = re.sub(r'\s+', ' ', text.strip())
         text = html.unescape(text)
         return text
@@ -961,8 +959,6 @@ def get_formatted_passage(head_paragraph, head_section, paragraph_id, element):
     def _clean_text_local(text: str) -> str:
         if not text:
             return ""
-        import re
-        import html
         text = re.sub(r'\s+', ' ', text.strip())
         text = html.unescape(text)
         return text

grobid_client/format/TEI2Markdown.py

@@ -648,8 +648,6 @@ def _extract_urls(self, bibl_struct: Tag, bib_data: dict) -> None:
 
     def _extract_year(self, date_text: str) -> str:
         """Extract year from date text, handling various formats."""
-        import re
-
         # Look for 4-digit year patterns
         year_match = re.search(r'\b(19|20)\d{2}\b', date_text)
         if year_match: