diff --git a/pdfmerging/observer.py b/pdfmerging/observer.py
deleted file mode 100644
index da84c34..0000000
--- a/pdfmerging/observer.py
+++ /dev/null
@@ -1,65 +0,0 @@
-import asyncio
-import logging
-from pathlib import Path
-from watchfiles import awatch, Change
-import magic
-import fitz
-import yaml
-from datetime import datetime, timedelta
-from pdfmerging.config import setup_root, templatefile, definitionsfile, fieldsfile, loglevel
-from pdfmerging.merging import extract_fields
-
-
-logging.basicConfig()
-logger = logging.getLogger("observer")
-logger.setLevel(loglevel)
-logger.info(f"loglevel set to {logger.level}")
-
-cache = {}
-
-async def main():
-    logger.info(f"watching for changes in {setup_root}")
-    async for changes in awatch(setup_root):
-        for change in changes:
-
-            if change in cache and (datetime.now() - cache[change]) < timedelta(seconds=5):
-                logger.debug("change already handled, passing")
-                continue
-            else:
-                cache[change] = datetime.now()
-
-            change_type, file_path = change
-            doc_file = Path(file_path)
-            doc_case = doc_file.parent
-            org = doc_case.parent
-            if doc_file.is_file() and change_type in (Change.added, Change.modified):
-                doc_type = magic.from_file(doc_file)
-                if doc_case == setup_root or org == setup_root:
-                    logger.warning(f"not processing file at invalid location {file_path}")
-                    continue
-                if doc_file.name in (templatefile, fieldsfile):
-                    continue
-                if doc_file.name != definitionsfile:
-                    logger.warning(f"file name '{doc_file.name}' is not a definitions file ('{definitionsfile}'), not processing")
-                    continue
-                if not doc_type.startswith("PDF"):
-                    logger.warning(f"invalid {doc_type} file added at {file_path}")
-                    continue
-
-                logger.info(f"processing PDF file {doc_file.name} {change_type.name}...")
-
-                with fitz.open(doc_file) as pdf:
-                    try:
-                        fields = extract_fields(pdf)
-                    except Exception as exc:
-                        logger.error(f"field extraction from {doc_file.name} failed: ", exc)
-                    else:
-                        dump_path =  setup_root / org.name / doc_case.name / fieldsfile
-                        dump_path.parent.mkdir(parents=True, exist_ok=True)
-                        with open(dump_path, "w", encoding="utf-8") as dumpfile:
-                            dumpfile.write(yaml.dump(tuple(fields)))
-                        logger.info(f"field definitions file successfully generated")
-
-
-if __name__=="__main__":
-   asyncio.run(main())