don't set user to current user

also remove condition to bypass setting user if user matches current user
this enables forcing user when set to the same user as current user and ignoring .ssh/config
while keeping .ssh/config with current user if nothing is specified.

lib/ansible/plugins/connection/ssh.py

@@ -23,7 +23,6 @@ import fcntl
 import os
 import pipes
 import pty
-import pwd
 import select
 import shlex
 import subprocess
@@ -188,7 +187,7 @@ class Connection(ConnectionBase):
             )
 
         user = self._play_context.remote_user
-        if user and user != pwd.getpwuid(os.geteuid())[0]:
+        if user:
             self._add_args(
                 "ANSIBLE_REMOTE_USER/remote_user/ansible_user/user/-u set",
                 ("-o", "User={0}".format(self._play_context.remote_user))