Remove back links from detail views

Never used them, can be removed

lib/music_library_web/live/collection_live/show.ex

@@ -7,15 +7,6 @@ defmodule MusicLibraryWeb.CollectionLive.Show do
 
   @impl true
   def mount(_params, _session, socket) do
-    back_url =
-      if connected?(socket) do
-        socket
-        |> get_connect_params()
-        |> Map.get("_live_referer", ~p"/collection")
-      else
-        ~p"/collection"
-      end
-
     socket =
       if static_changed?(socket) do
         put_flash(socket, :warning, gettext("The application has been updated, please reload."))
@@ -23,7 +14,7 @@ defmodule MusicLibraryWeb.CollectionLive.Show do
         socket
       end
 
-    {:ok, assign(socket, :back_url, back_url)}
+    {:ok, socket}
   end
 
   @impl true

lib/music_library_web/live/collection_live/show.html.heex

@@ -224,12 +224,6 @@
   <pre><code class="text-xs sm:text-sm"><%= Jason.encode!(@record.musicbrainz_data, pretty: true) %></code></pre>
 </details>
 
-<div class="mt-4">
-  <.back navigate={@back_url}>
-    {gettext("Back to records")}
-  </.back>
-</div>
-
 <.modal
   :if={@live_action == :edit}
   id="record-modal"

lib/music_library_web/live/wishlist_live/show.ex

@@ -5,15 +5,6 @@ defmodule MusicLibraryWeb.WishlistLive.Show do
 
   @impl true
   def mount(_params, _session, socket) do
-    back_url =
-      if connected?(socket) do
-        socket
-        |> get_connect_params()
-        |> Map.get("_live_referer", ~p"/wishlist")
-      else
-        ~p"/wishlist"
-      end
-
     socket =
       if static_changed?(socket) do
         put_flash(socket, :warning, gettext("The application has been updated, please reload."))
@@ -21,7 +12,7 @@ defmodule MusicLibraryWeb.WishlistLive.Show do
         socket
       end
 
-    {:ok, assign(socket, :back_url, back_url)}
+    {:ok, socket}
   end
 
   @impl true

lib/music_library_web/live/wishlist_live/show.html.heex

@@ -234,12 +234,6 @@
   <pre><code class="text-xs sm:text-sm"><%= Jason.encode!(@record.musicbrainz_data, pretty: true) %></code></pre>
 </details>
 
-<div class="mt-4">
-  <.back navigate={@back_url}>
-    {gettext("Back to wishlist")}
-  </.back>
-</div>
-
 <.modal
   :if={@live_action == :edit}
   id="record-modal"