Update app.py

app.py

@@ -16,8 +16,7 @@ class ZipCodeEntry(NamedTuple):
 
 
 def _load_zip_codes() -> Dict[str, ZipCodeEntry]:
-    df = pdb.read_csv(f'{_ROOT_DIR}/utils/us-zip-code-latitude-and-longitude.txt', dtype=str,
-                      sep=';')
+    df = pdb.read_csv('us-zip-code-latitude-and-longitude.txt', dtype=str, sep=';')
     zip_code_list = {}
     # Zip;City;State;Latitude;Longitude;Timezone;Daylight savings time flag;geopoint
     for _, row in df.iterrows():