Remove code checking for phx < 1.6

Only support heex now also, since we only support phx 1.6+

lib/mix/tasks/torch.gen.html.ex

@@ -21,14 +21,11 @@ defmodule Mix.Tasks.Torch.Gen.Html do
 
     Mix.Torch.ensure_phoenix_is_loaded!("torch.gen.html")
 
-    phoenix_version = to_string(Application.spec(:phoenix, :vsn))
-
-    # Check for Phoenix 1.6+ with Phoenix.HTML 3+ and Heex
     template_format =
-      cond do
-        format == "slime" -> format
-        Version.match?(phoenix_version, ">= 1.6.0-rc.0", allow_pre: true) -> "heex"
-        true -> "eex"
+      if format == "slime" do
+        format
+      else
+        "heex"
       end
 
     # First, backup the projects existing templates if they exist

priv/templates/common/phx.gen.html/controller.ex

@@ -4,12 +4,8 @@ defmodule <%= inspect context.web_module %>.<%= inspect Module.concat(schema.web
   alias <%= inspect context.module %>
   alias <%= inspect schema.module %>
 
-  <%= if Version.match?(to_string(Application.spec(:phoenix, :vsn)), "< 1.5.0") do %>
-  plug(:put_layout, {<%= inspect context.web_module %>.LayoutView, "torch.html"})
-  <% else %>
   plug(:put_root_layout, {<%= inspect context.web_module %>.LayoutView, "torch.html"})
   plug(:put_layout, false)
-  <% end %>
 
   def index(conn, params) do
     case <%= inspect context.alias %>.paginate_<%= schema.plural %>(params) do