Revert "[libfko] Have 'make install' run ldconfig if basic fwknop/fwknopd -h exec fails"

This reverts commit f55b89c867.

Damien recommended not having 'make install' run ldconfig since it breaks an RPM
build of fwknop, and most package managers should be doing this step anyway.

CREDITS

@@ -115,9 +115,6 @@ George Herlin
       test suite operate equivalently regardless of whether valgrind is used or
       whether fwknop is being tested on an embedded system with very limited
       resources.
-    - Suggested that 'make install' run ldconfig since on some systems it
-      appears that ldconfig is not automatically run via the autoconf generated
-      Makefile configs.
 
 Ruhsam Bernhard
     - Reported an issue where the message size test would result in long

Makefile.am

@@ -346,14 +346,3 @@ install-exec-hook:
 	if test -f $(DESTDIR)$(sysconfdir)/fwknop/access.conf; then \
 		chmod 600 $(DESTDIR)$(sysconfdir)/fwknop/access.conf; \
 	fi
-	if test -f $(DESTDIR)$(bindir)/fwknop; then \
-		if ! $(DESTDIR)$(bindir)/fwknop -h > /dev/null 2>&1; then \
-			ldconfig; \
-		fi \
-	else \
-		if test -f $(DESTDIR)$(sbindir)/fwknopd; then \
-			if ! $(DESTDIR)$(sbindir)/fwknopd -h > /dev/null 2>&1; then \
-				ldconfig -v; \
-			fi \
-		fi \
-	fi