[Kiwi76]

Yes, via editing templates. Find the bit of code in the templates and just remove them. Optionally, you might want to remove it from the profile view page too? Removing them from templates will cause the page not to generate that field, so they can't see it fill it out, BUT anyone who filled it out already will still have it. You'll either need to manually remove those, hide them from appearing in the profile as I suggested, or run a query.

Is there a field for your homepage in the registration? I couldn't find any (note that I'm using 3.5.8, so the code might be a bit different, but the solution will be the same).

I always recommend you to back up your templates before changing them in case anything goes wrong.

To remove it from the UserCP, in the "modifyprofile" template, remove this.

<fieldset class="fieldset">
				<legend><label for="tb_homepage">$vbphrase[home_page_url]</label></legend>
				<table cellpadding="0" cellspacing="$stylevar[formspacer]" border="0" width="100%">
				<tr>
					<td>$vbphrase[let_other_visitors_know_url]</td>
				</tr>
				<tr>
					<td>$vbphrase[home_page_url]<br /><input type="text" class="bginput" name="homepage" id="tb_homepage" value="$bbuserinfo[homepage]" size="50" maxlength="200" dir="ltr" /></td>
				</tr>
				</table>
			</fieldset>

To remove it from the profile view, in the "MEMBERINFO" template, remove this.

<if condition="$show['homepage']">
				<tr>
					<td>
						$vbphrase[home_page]:<br />
						<a href="$userinfo[homepage]" target="_blank" dir="ltr">$userinfo[homepage]</a>
					</td>
				</tr>
				</if>

If you plan to hide it in the profile instead of remove it, you may also want to do this. it will stop it from showing up in the dropdown menu when you click their name. In either the "postbit" or "postbit_legacy", depending on what you use, remove this.

<if condition="$show['homepage']">
		<tr><td class="vbmenu_option"><a href="$post[homepage]"><phrase 1="$post[username]">$vbphrase[visit_xs_homepage]</phrase></a></td></tr>
	</if>

Offhand, I think that's all that's needed.