Revert "lockfile in new subfolder"

tracim/development.ini.base

 email.reply.use_txt_parsing = true
 # Lockfile path is required for email_reply feature,
 # it's just an empty file use to prevent concurrent access to imap unseen mail
-email.reply.lockfile_path = %(here)s/tmp/email_fetcher.lock
+email.reply.lockfile_path = %(here)s/email_fetcher.lock
 
 ## Radical (CalDav server) configuration
 # radicale.server.host = 0.0.0.0

tracim/tracim/config/app_cfg.py

         ))
         self.EMAIL_REPLY_LOCKFILE_PATH = tg.config.get(
             'email.reply.lockfile_path',
-            '/tmp/tracim/email_fetcher.lock'
+            '/tmp/tracim_email_fetcher.lock'
         )
 
         self.TRACKER_JS_PATH = tg.config.get(

tracim/tracim/lib/email_fetcher.py

 # -*- coding: utf-8 -*-
 
-import os
 import time
 import imaplib
 import json
         self.token = token
         self.use_html_parsing = use_html_parsing
         self.use_txt_parsing = use_txt_parsing
-        self._set_lock(lockfile_path)
-        self._is_active = True
-
-    def _set_lock(self, lockfile_path):
-        dir_path = os.path.dirname(lockfile_path)
-        if dir_path:
-            os.makedirs(dir_path, exist_ok=True)
         self.lock = filelock.FileLock(lockfile_path)
+        self._is_active = True
 
     def run(self) -> None:
         logger.info(self, 'Starting MailFetcher')