fix: Remove unnecessary non breaking spaces

We do not use HTML 4 anymore. This just causes spaces
in these tables. We use CSS for that.

Author: tvdeyen

backend/app/views/spree/admin/prices/_master_variant_table.html.erb

@@ -29,7 +29,6 @@
             <%= link_to_edit(price, no_text: true) unless price.discarded? %>
           <% end %>
           <% if can?(:destroy, price) %>
-            &nbsp;
             <%= link_to_delete(price, no_text: true) unless price.discarded? %>
           <% end %>
         </td>

backend/app/views/spree/admin/prices/_table.html.erb

@@ -24,7 +24,6 @@
               <%= link_to_edit(price, no_text: true) unless price.discarded? %>
             <% end %>
             <% if can?(:destroy, price) %>
-              &nbsp;
               <%= link_to_delete(price, no_text: true) unless price.discarded? %>
             <% end %>
           </td>

backend/app/views/spree/admin/products/index.html.erb

@@ -87,9 +87,7 @@
             <td class="align-right"><%= product.display_price&.to_html %></td>
             <td class="actions" data-hook="admin_products_index_row_actions">
               <%= link_to_edit product, no_text: true, class: 'edit' if can?(:edit, product) && !product.deleted? %>
-              &nbsp;
               <%= link_to_clone product, no_text: true, class: 'clone' if can?(:clone, product) %>
-              &nbsp;
               <%= link_to_delete product, no_text: true if can?(:destroy, product) && !product.deleted? %>
             </td>
           </tr>

backend/app/views/spree/admin/variants/_table.html.erb

@@ -33,7 +33,6 @@
           <%= link_to_edit(variant, no_text: true) unless variant.deleted? %>
         <% end %>
         <% if can?(:destroy, variant) %>
-          &nbsp;
           <%= link_to_delete(variant, no_text: true) unless variant.deleted? %>
         <% end %>
       </td>