Fix CQS signal facebook-unused-include-check in fbcode/eden/scm/contrib/chg

Reviewed By: dtolnay

Differential Revision: D75934938

fbshipit-source-id: 344393555593e2d8ee0b81d748f632791ce54db4

Author: generatedunixname89002005287564

eden/scm/contrib/chg/chg.c

@@ -7,18 +7,13 @@
  * GNU General Public License version 2 or any later version.
  */
 
-#include <assert.h>
 #include <errno.h>
 #include <fcntl.h>
-#include <signal.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <sys/file.h>
 #include <sys/resource.h>
 #include <sys/stat.h>
-#include <sys/types.h>
-#include <sys/un.h>
 #include <sys/wait.h>
 #include <time.h>
 #include <unistd.h>