also update check_rpc.pl and check_wave.pl

plugins-scripts/check_rpc.pl

@@ -22,7 +22,6 @@
 use strict;
 use FindBin;
 use lib "$FindBin::Bin";
-use lib '@libexecdir@';
 use utils qw($TIMEOUT %ERRORS &print_revision &support);
 use vars qw($PROGNAME);
 my ($verbose,@proto,%prognum,$host,$response,$prognum,$port,$cmd,$progver,$state);

plugins-scripts/check_wave.pl

@@ -5,7 +5,6 @@
 use strict;
 use FindBin;
 use lib "$FindBin::Bin";
-use lib '@libexecdir@';
 use utils qw($TIMEOUT %ERRORS &print_revision &support);
 use vars qw($PROGNAME);
 use Getopt::Long;