Remove some vestigial popt comments and headers.

src/scancel/opt.c

@@ -64,8 +64,6 @@ struct signv {
 	{ "TTOU",	SIGTTOU }
 };
 
-/*---[ end popt definitions ]---------------------------------------------*/
-
 /* forward declarations of static functions 
  *
  */
@@ -257,7 +255,7 @@ static void _opt_env()
 }
 
 /*
- * opt_args() : set options via commandline args and popt
+ * opt_args() : set options via commandline args and getopt_long
  */
 static void _opt_args(int argc, char **argv)
 {

src/scancel/scancel.h

@@ -39,12 +39,6 @@
 #include <getopt.h>
 */
 
-#if HAVE_POPT_H
-#include <popt.h>
-#else
-#include <src/popt/popt.h>
-#endif
-
 #include <src/common/macros.h>	/* true and false */
 #include <src/common/slurm_protocol_defs.h>