Remove HAVE_STRPTIME - no longer necessary with the pure Python version of
time.strptime().
diff --git a/configure.in b/configure.in
index 8eb0008..f05aed4 100644
--- a/configure.in
+++ b/configure.in
@@ -2012,7 +2012,7 @@
  putenv readlink realpath \
  select setegid seteuid setgid \
  setlocale setregid setreuid setsid setpgid setpgrp setuid setvbuf snprintf \
- sigaction siginterrupt sigrelse strftime strptime \
+ sigaction siginterrupt sigrelse strftime \
  sysconf tcgetpgrp tcsetpgrp tempnam timegm times tmpfile tmpnam tmpnam_r \
  truncate uname unsetenv utimes waitpid wcscoll _getpty)