fix: remove SECRET_KEY_BASE

This is a followup to #99. All this means is it's no longer required for
users to specify `SECRET_KEY_BASE` (which we don't use anyway).

Author: soedirgo

server/config/releases.exs

@@ -55,13 +55,4 @@ config :realtime,
   jwt_secret: jwt_secret,
   jwt_claim_validators: jwt_claim_validators
 
-secret_key_base =
-  System.get_env("SECRET_KEY_BASE") ||
-    raise """
-    environment variable SECRET_KEY_BASE is missing.
-    You can generate one by calling: mix phx.gen.secret
-    """
-
-config :realtime, RealtimeWeb.Endpoint,
-  http: [:inet6, port: app_port],
-  secret_key_base: secret_key_base
+config :realtime, RealtimeWeb.Endpoint, http: [:inet6, port: app_port]