Removed unnecessary crawlingDomFilterDepth hidden field.

It had incorrect "-UNRESOLVED_PATTERN-" value (see  second part of
mantis 691 http://mantis.tokeek.de/view.php?id=691 )

Note : crawlingDomFilterDepth is apparently unused in current (2016)
YaCy code-base. It was also unnecessary because crawlingDomFilterCheck
hidden field is set to "off".

htroot/CrawlStartSite.html

@@ -63,7 +63,6 @@
 			<input type="hidden" name="deleteold" id="deleteold" value="on" />
 			<input type="hidden" name="mustnotmatch" id="mustnotmatch" value="" />
 			<input type="hidden" name="crawlingDomFilterCheck" id="crawlingDomFilterCheck" value="off" />
-			<input type="hidden" name="crawlingDomFilterDepth" id="crawlingDomFilterDepth" value="#[crawlingDomFilterDepth]#" />
 		</dd>
         <dt><label>Limitation</label></dt>
         <dd><table border="0" cellpadding="0" cellspacing="0"><tr valign="top">