Use consistent log file names, introduced initLogger (#3403)

### What problem does this PR solve?

Use consistent log file names, introduced initLogger

### Type of change

- [ ] Bug Fix (non-breaking change which fixes an issue)
- [ ] New Feature (non-breaking change which adds functionality)
- [ ] Documentation Update
- [x] Refactoring
- [ ] Performance Improvement
- [ ] Other (please describe):

rag/app/laws.py

@@ -21,7 +21,6 @@ from rag.nlp import bullets_category, remove_contents_table, hierarchical_merge,
     make_colon_as_title, tokenize_chunks, docx_question_level
 from rag.nlp import rag_tokenizer
 from deepdoc.parser import PdfParser, DocxParser, PlainParser, HtmlParser
-from api.utils.log_utils import logger
 
 
 class Docx(DocxParser):
@@ -122,7 +121,7 @@ class Pdf(PdfParser):
         start = timer()
         self._layouts_rec(zoomin)
         callback(0.67, "Layout analysis finished")
-        logger.info("layouts:".format(
+        logging.debug("layouts:".format(
             ))
         self._naive_vertical_merge()