fixup! posix: switch to using posix_time.h and posix_signal.h

Author: cfriedt

samples/net/ocpp/src/main.c

@@ -5,14 +5,14 @@
  */
 
 #include <stdio.h>
+#include <time.h>
 
 #include <zephyr/net/net_if.h>
 #include <zephyr/net/net_core.h>
 #include <zephyr/net/net_context.h>
 #include <zephyr/net/net_mgmt.h>
 #include <zephyr/net/sntp.h>
 #include <zephyr/net/ocpp.h>
-#include <zephyr/posix/time.h>
 #include <zephyr/random/random.h>
 #include <zephyr/zbus/zbus.h>