<%= content_tag :li, class: ('active' if current == I18n.t('spree.volume_pricing')) do %>
  <%= link_to_with_icon 'tasks', I18n.t('spree.volume_pricing'), volume_prices_admin_product_variant_url(@product, @product.master) %>
<% end %>

<%= content_tag :li, class: ('active' if current == I18n.t('spree.volume_pricing')) do %>
  <%= link_to I18n.t('spree.volume_pricing'), volume_prices_admin_product_variant_url(@product, @product.master) %>
<% end %>

Remove the icon from product volume prices tab
Remove the icon from product volume prices tab

This is deprecated UI in current Solidus
