Remove dead xhtml5 validation site

Makefile

@@ -104,12 +104,6 @@ endef
 .PHONY: www
 www: $(XML_CATALOG) $(CONTENT)
 	$(RSYNC) $(RSYNC_FLAGS) --exclude=".stamp-*" content/static/ content/old-site/ build/ $@
-	@echo
-	@echo
-	@echo 'Great!'
-	@echo
-	@echo 'You may now run `make -j3 xhtml5-validate` to make sure everything fits.'
-	@echo
 
 .PHONY: export
 export: www
@@ -359,10 +353,6 @@ build/datenspuren/$(DS_YEAR)/pois.json:
 #build/autotopia/%.html: content/autotopia/%.xml $(AUTOTOPIA_STYLE) autotopia-events.xml
 #	$(call xml_process)
 
-xhtml5-validate: $(patsubst build/%.html, build/%.html.xhtml5-validate, $(CONTENT))
-build/%.html.xhtml5-validate: build/%.html
-	./scripts/validate_xhtml5.sh $<
-
 ### Die neuesten Chaosupdates holen ###
 #$(WWW_CCC_DE_UPDATES).orig: $(DATESTAMP)
 #	$(RM) $@

scripts/validate_xhtml5.sh

@@ -1,12 +0,0 @@
-#!/bin/sh
-
-text=$(curl -s -d @$1 -H "Content-Type: application/xhtml+xml; charset=UTF-8" 'http://validator.nu/?out=text&preset=http://s.validator.nu/xhtml5-aria-rdf-svg-mathml.rnc+http://s.validator.nu/html5/assertions.sch+http://c.validator.nu/all/')
-
-if [ -n "$(echo "$text"|grep "The document validates according to the specified schema(s).")" ]; then
-    exit 0
-else
-    echo "=== $1 ==="
-    echo "$text"
-    exit 1
-fi
-