Use "with suppress()" to suppress python exceptions

Using
```Python
with suppress(OSError):
    os.remove('somefile.tmp')
```
instead of
```Python
try:
    os.remove('somefile.tmp')
except OSError:
    pass
```
makes the code more compact and more readable IMO.

This pattern was recommended by Raymond Hettinger, a Python Core
Developer in his talk "Transforming Code into Beautiful, Idiomatic Python" at https://www.youtube.com/watch?v=OSGv2VnC0go. The transcript is available at https://github.com/JeffPaine/beautiful_idiomatic_python

kitty/remote_control.py

@@ -8,6 +8,7 @@ import re
 import sys
 import types
 from functools import partial
+from contextlib import suppress
 
 from .cli import emph, parse_args
 from .cmds import cmap, parse_subcommand_cli
@@ -67,10 +68,8 @@ class SocketIO:
 
     def __exit__(self, *a):
         import socket
-        try:
+        with suppress(EnvironmentError):  # on some OSes such as macOS the socket is already closed at this point
             self.socket.shutdown(socket.SHUT_RDWR)
-        except EnvironmentError:
-            pass  # on some OSes such as macOS the socket is already closed at this point
         self.socket.close()
 
     def send(self, data):