Remove if which check - done in tools/setup instead

git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@560 f882894a-f735-0410-b71e-b25c423dba1c

doc/makefile

@@ -1,10 +1,7 @@
 # Quick makefile to create developer-guidelines.html
 
 developer-guidelines.html: developer-guidelines.sgml
-	if which docbook2html > /dev/null 2>&1; then \
-		docbook2html -u developer-guidelines.sgml ;\
-		if [[ -e developer-guidelines/developer-guidelines.html ]] ; then \
-			mv developer-guidelines/developer-guidelines.html . ;\
-			rm -f developer-guidelines ;\
-		fi ;\
-	fi
+	docbook2html -u developer-guidelines.sgml
+	if [[ -e developer-guidelines/developer-guidelines.html ]] ; then \
+		mv developer-guidelines/developer-guidelines.html . ;\
+	rm -f developer-guidelines ;\