Revert "Ask for proxy URL if proxy enabled."

The most common case is running it on the same server.

lib/mix/tasks/generate_config.ex

@@ -15,14 +15,6 @@ def run(_) do
       |> String.downcase()
       |> String.starts_with?("y")
 
-    proxy_url =
-      if mediaproxy do
-        IO.gets("What is the mediaproxy's URL? (e.g. https://cache.example.com): ")
-        |> String.trim()
-      else
-        "https://cache.example.com"
-      end
-
     secret = :crypto.strong_rand_bytes(64) |> Base.encode64() |> binary_part(0, 64)
     dbpass = :crypto.strong_rand_bytes(64) |> Base.encode64() |> binary_part(0, 64)
 

lib/mix/tasks/sample_config.eex

@@ -13,7 +13,7 @@ config :pleroma, :instance,
 config :pleroma, :media_proxy,
   enabled: <%= mediaproxy %>,
   redirect_on_failure: true,
-  base_url: "<%= proxy_url %>"
+  #base_url: "https://cache.pleroma.social"
 
 # Configure your database
 config :pleroma, Pleroma.Repo,