Revert "Update errno from go" (#90)

lib/errno.py

-# Copyright 2016 Google Inc. All Rights Reserved.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-"""Errno values from syscall."""
-
-from __go__.syscall import (
-    E2BIG, EACCES, EADDRINUSE, EADDRNOTAVAIL, EADV, EAFNOSUPPORT, EAGAIN,
-    EALREADY, EBADE, EBADF, EBADFD, EBADMSG, EBADR, EBADRQC, EBADSLT, EBFONT,
-    EBUSY, ECANCELED, ECHILD, ECHRNG, ECOMM, ECONNABORTED, ECONNREFUSED,
-    ECONNRESET, EDEADLK, EDEADLOCK, EDESTADDRREQ, EDOM, EDOTDOT, EDQUOT,
-    EEXIST, EFAULT, EFBIG, EHOSTDOWN, EHOSTUNREACH, EIDRM, EILSEQ, EINPROGRESS,
-    EINTR, EINVAL, EIO, EISCONN, EISDIR, EISNAM, EKEYEXPIRED, EKEYREJECTED,
-    EKEYREVOKED, EL2HLT, EL2NSYNC, EL3HLT, EL3RST, ELIBACC, ELIBBAD, ELIBEXEC,
-    ELIBMAX, ELIBSCN, ELNRNG, ELOOP, EMEDIUMTYPE, EMFILE, EMLINK, EMSGSIZE,
-    EMULTIHOP, ENAMETOOLONG, ENAVAIL, ENETDOWN, ENETRESET, ENETUNREACH, ENFILE,
-    ENOANO, ENOBUFS, ENOCSI, ENODATA, ENODEV, ENOENT, ENOEXEC, ENOKEY, ENOLCK,
-    ENOLINK, ENOMEDIUM, ENOMEM, ENOMSG, ENONET, ENOPKG, ENOPROTOOPT, ENOSPC,
-    ENOSR, ENOSTR, ENOSYS, ENOTBLK, ENOTCONN, ENOTDIR, ENOTEMPTY, ENOTNAM,
-    ENOTRECOVERABLE, ENOTSOCK, ENOTSUP, ENOTTY, ENOTUNIQ, ENXIO, EOPNOTSUPP,
-    EOVERFLOW, EOWNERDEAD, EPERM, EPFNOSUPPORT, EPIPE, EPROTO, EPROTONOSUPPORT,
-    EPROTOTYPE, ERANGE, EREMCHG, EREMOTE, EREMOTEIO, ERESTART, ERFKILL, EROFS,
-    ESHUTDOWN, ESOCKTNOSUPPORT, ESPIPE, ESRCH, ESRMNT, ESTALE, ESTRPIPE, ETIME,
-    ETIMEDOUT, ETOOMANYREFS, ETXTBSY, EUCLEAN, EUNATCH, EUSERS, EWOULDBLOCK,
-    EXDEV, EXFULL)  # pylint: disable=g-multiple-import,unused-import
+EINVAL = 22