commandserver: do not handle EINTR for selector.select

selectors2 library handles EINTR transparently so we don't need to handle
select.error ourselves.

mercurial/commandserver.py

@@ -11,7 +11,6 b' import errno'
 import gc
 import os
 import random
-import select
 import signal
 import socket
 import struct
@@ -488,15 +487,15 b' class unixforkingservice(object):'
                 # waiting for recv() will receive ECONNRESET.
                 self._unlinksocket()
                 exiting = True
-            try:
                 ready = selector.select(timeout=h.pollinterval)
                 if not ready:
                     # only exit if we completed all queued requests
                     if exiting:
                         break
                     continue
+            try:
                 conn, _addr = self._sock.accept()
-            except (select.error, socket.error) as inst:
+            except socket.error as inst:
                 if inst.args[0] == errno.EINTR:
                     continue
                 raise