Remove kaminari_path

The main reason to use it was the `rel` attribute for previous/next
pages not being indexed correctly by certain search engines when using a
relative URL. However, AFAIK that only applied to `<link>` tags, not to
`<a>` tags, and only if a `<base>` tag was defined.

In any case, it looks like the same search engines don't use the `rel`
attribute for previous/next to index pages anymore.

app/views/kaminari/_first_page.html.erb

@@ -1,3 +1,3 @@
 <li>
-  <%= link_to t("views.pagination.first"), kaminari_path(url), :remote => remote %>
+  <%= link_to t("views.pagination.first"), url, :remote => remote %>
 </li>

app/views/kaminari/_last_page.html.erb

@@ -1,3 +1,3 @@
 <li>
-  <%= link_to t("views.pagination.last"), kaminari_path(url), :remote => remote %>
+  <%= link_to t("views.pagination.last"), url, :remote => remote %>
 </li>

app/views/kaminari/_next_page.html.erb

@@ -1,3 +1,3 @@
 <li class="pagination-next">
-  <%= link_to t("views.pagination.next"), kaminari_path(url), :rel => "next", :remote => remote %>
+  <%= link_to t("views.pagination.next"), url, :rel => "next", :remote => remote %>
 </li>

app/views/kaminari/_page.html.erb

@@ -5,6 +5,6 @@
   </li>
 <% else %>
   <li>
-    <%= link_to page, kaminari_path(url), { :remote => remote, :rel => page.next? ? "next" : page.prev? ? "prev" : nil } %>
+    <%= link_to page, url, { :remote => remote, :rel => page.next? ? "next" : page.prev? ? "prev" : nil } %>
   </li>
 <% end %>

app/views/kaminari/_prev_page.html.erb

@@ -1,3 +1,3 @@
 <li class="pagination-previous">
-  <%= link_to t("views.pagination.previous"), kaminari_path(url), :rel => "prev", :remote => remote %>
+  <%= link_to t("views.pagination.previous"), url, :rel => "prev", :remote => remote %>
 </li>