do not set SIG_IGN now that the parent process is getting the childs exit status

apps/wolfsshd/wolfsshd.c

@@ -1317,10 +1317,6 @@ static int SHELL_Subsystem(WOLFSSHD_CONNECTION* conn, WOLFSSH* ssh,
         exit(ret); /* exit child process and close down SSH connection */
     }
 
-    /* do not wait for status of child process, and signal that the child can
-     * be reaped to avoid zombie processes when running in the foreground */
-    signal(SIGCHLD, SIG_IGN);
-
     if (wolfSSHD_AuthReducePermissionsUser(conn->auth, pPasswd->pw_uid,
         pPasswd->pw_gid) != WS_SUCCESS) {
         wolfSSH_Log(WS_LOG_ERROR, "[SSHD] Error setting user ID");