Skip pointless ignoring return value of 'rm -f'.

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@28257 b3059339-0415-0410-9bf9-f77b7e298cf2

DOCS/xml/Makefile

@@ -58,7 +58,7 @@ clean:
 releaseclean:
 	rm -f $(foreach lang,$(DOC_LANG_ALL),$(lang)/main.xml)
 	rm -f $$(find . -name *.xml -type l)
-	-rm -f html-chunk.xsl html-single.xsl xsltproc.sh xmllint.sh
+	rm -f html-chunk.xsl html-single.xsl xsltproc.sh xmllint.sh
 
 distclean: clean releaseclean