Revert "test: fix server resource warnings"

This reverts commit 56577aa.

Author: DifferentialOrange

test/suites/lib/tarantool_server.py

@@ -22,8 +22,6 @@ def check_port(port, rais=True):
         sock = socket.create_connection(("localhost", port))
     except socket.error:
         return True
-    sock.close()
-
     if rais:
         raise RuntimeError("The server is already running on port {0}".format(port))
     return False
@@ -138,7 +136,7 @@ def __init__(self,
                  ssl_ca_file=None,
                  ssl_ciphers=None,
                  create_unix_socket=False):
-        os.popen('ulimit -c unlimited').close()
+        os.popen('ulimit -c unlimited')
 
         if create_unix_socket:
             self.host = None
@@ -212,7 +210,6 @@ def wait_until_started(self):
                 while True:
                     ans = temp('box.info.status')[0]
                     if ans in ('running', 'hot_standby', 'orphan') or ans.startswith('replica'):
-                        temp.disconnect()
                         return True
                     elif ans in ('loading',):
                         continue
@@ -265,8 +262,6 @@ def clean(self):
         if (self._socket is not None) and (not self._socket.file.closed):
             self._socket.close()
 
-        del self.log_des
-
     def __del__(self):
         self.stop()
         self.clean()