Remove test involving XPointer range-to function

Support for XPointer locations has been deprecated in libxml2.

tests/docs/Makefile.am

@@ -183,8 +183,6 @@
 	bug-182.xml \
 	bug-183.xml \
 	bug-184.xml \
-	bug-185-data.xml \
-	bug-185.xml \
 	bug-186.xml \
 	bug-187.xml \
 	bug-188.xml \

tests/docs/bug-185-data.xml

-<!DOCTYPE test [ <!ATTLIST A id ID #REQUIRED> ] >
-<test>
-  <A id="X"/>
-  <A id="Y"/>
-</test>

tests/docs/bug-185.xml

-<?xml-stylesheet href="poc.xsl" type="text/xsl"?>
-<in>bug-185-data.xml#xpointer(id('X')/range-to(id('Y')))</in>

tests/general/Makefile.am

@@ -192,7 +192,6 @@
     bug-182.out bug-182.xsl \
     bug-183.out bug-183.xsl \
     bug-184.out bug-184.xsl bug-184.err \
-    bug-185.out bug-185.xsl bug-185.err \
     bug-186.out bug-186.xsl \
     bug-187.out bug-187.xsl bug-187.err \
     bug-188.out bug-188.xsl bug-188-imp.out bug-188-imp.xsl \

tests/general/bug-185.err

-runtime error: file ./bug-185.xsl line 7 element copy-of
-document() : XPointer does not select a node set: #xpointer(id('X')/range-to(id('Y')))
-no result for ./../docs/bug-185.xml

tests/general/bug-185.xsl

-<?xml version="1.0" encoding="utf-8"?>
-<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
-  <xsl:template match="in">
-    <annotation>
-      <xsl:copy-of select="."/>
-      <value>
-        <xsl:copy-of select="document(.)"/>
-      </value>
-    </annotation>
-  </xsl:template>
-  <xsl:template match="@*|node()">
-    <xsl:apply-templates/>
-  </xsl:template>
-</xsl:stylesheet>