subst.in: remove the led() function

It was only used to replace the 'use lib utils.pm' with the proper
libexec dir, which is now solved by using Perl's FinBin.

Closes #1241

plugins-scripts/subst.in

@@ -19,19 +19,6 @@ function which(c,path) {
 	return c;
 }
 
-# used to replace "use lib utils.pm" with "use lib @libexecdir"
-#
-function led() {
-	led1 = "@libexecdir@";
-	led2 = "@exec_prefix@";
-	led3 = "@prefix@";
-	if ( match(led1, /^\$\{exec_prefix\}/ ) != 0 ) {
-		return "\"" led3 "/libexec\" " ;
-	
-	}
-	return "\"" led1 "\"" ;
-}
-
 BEGIN {
 	split(ENVIRON["PATH"] ":/sbin:/usr/sbin",path,/:/);
 
@@ -58,10 +45,6 @@ BEGIN {
 	sub(c,which(c,path));
 }
 
-# add to libexecdir to INC for perl utils.pm
-/^use/ { if (/lib/) { if (/utils.pm|"."/ ) {sub(/utils.pm|"."/,led() )} } }
-
-
 # Trusted path mechanism (deprecated)
 
 /^[ \t]*\$ENV[ \t]*\{[ \t'"]*PATH[ \t"']*\}[ \t]*=/ {