Fix bad error message in sniffer.

panda/utils/csvdata.py

@@ -14,7 +14,7 @@ def sniff_dialect(path, encoding='utf-8'):
         try:
             csv_dialect = csvkit_sniff(f.read(settings.PANDA_SNIFFER_MAX_SAMPLE_SIZE))
         except UnicodeDecodeError:
-            raise DataSamplingError('This CSV file contains characters that are not %s encoded. You need to input the correct encoding in order to import data from this file.' % (settings.PANDA_SNIFFER_MAX_SAMPLE_SIZE, encoding))
+            raise DataSamplingError('This CSV file contains characters that are not %s encoded. You need to input the correct encoding in order to import data from this file.' % (encoding))
 
         if not csv_dialect:
             raise NotSniffableError('CSV dialect could not be automatically inferred.')