basic: include only what we use

This is a cleaned up result of running iwyu but without forward
declarations on src/basic.

src/basic/terminal-util.c

@@ -17,18 +17,25 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
-#include <assert.h>
+#include <errno.h>
 #include <fcntl.h>
+#include <limits.h>
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/inotify.h>
+#include <sys/socket.h>
+#include <sys/sysmacros.h>
+#include <sys/time.h>
 #include <linux/kd.h>
 #include <linux/tiocl.h>
 #include <linux/vt.h>
 #include <poll.h>
 #include <signal.h>
 #include <sys/ioctl.h>
-#include <sys/stat.h>
 #include <sys/types.h>
 #include <termios.h>
-#include <time.h>
 #include <unistd.h>
 
 #include "alloc-util.h"
@@ -37,9 +44,10 @@
 #include "fs-util.h"
 #include "io-util.h"
 #include "parse-util.h"
-#include "path-util.h"
 #include "process-util.h"
 #include "socket-util.h"
+#include "log.h"
+#include "macro.h"
 #include "stat-util.h"
 #include "string-util.h"
 #include "terminal-util.h"