如何从自定义模块中的外露过滤器中取消设置标签？ （form_alter）
HTML：
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<form action="/location-list" method="get" id="views-exposed-form-zoekresultaten-geolocation-zoekresultaten" accept-charset="UTF-8">
<div>
<div class="views-exposed-form">
<div class="views-exposed-widgets clearfix">
<div id="edit-distance-wrapper" class="views-exposed-widget views-widget-filter-distance">
<div class="views-widget">
<div class="form-item form-type-textfield form-item-distance-postal-code">
<label for="edit-distance-postal-code">Postcode </label>
<input type="text" id="edit-distance-postal-code" name="distance[postal_code]" value="" size="60" maxlength="16" class="form-text" />
</div>
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