Revert "Included charset detection"

This reverts commit 62490ff183.

offlineimap/folder/Maildir.py

@@ -20,11 +20,9 @@ import socket
 import time
 import re
 import os
-from pathlib import Path
 from sys import exc_info
 from threading import Lock
 from hashlib import md5
-import chardet
 from offlineimap import OfflineImapError, emailutil
 from .Base import BaseFolder
 
@@ -258,18 +256,11 @@ class MaildirFolder(BaseFolder):
     def getmessage(self, uid):
         """Return the content of the message."""
 
-        # TODO: Perhaps, force the encoding using config file
         filename = self.messagelist[uid]['filename']
         filepath = os.path.join(self.getfullname(), filename)
-        # Open the file as binary and read it
-        file = Path(filepath)
-        blob = file.read_bytes()
-        # Detect the encoding
-        detection = chardet.detect(blob)
-        encoding = detection["encoding"]
-        # Read the file as text
-        retval = blob.decode(encoding)
-
+        file = open(filepath, 'rt')
+        retval = file.read()
+        file.close()
         # TODO: WHY are we replacing \r\n with \n here? And why do we
         #      read it as text?
         return retval.replace("\r\n", "\n")

requirements.txt

@@ -3,8 +3,3 @@ gssapi[kerberos]
 portalocker[cygwin]
 rfc6555
 distro
-
-imaplib2~=3.5
-urllib3~=1.25.9
-certifi~=2020.6.20
-chardet~=3.0.4