Remove unnecessary json-decode on http errors in raw-client/poller

Author: mk-fg

lib/matrix/raw_client.ex

@@ -37,12 +37,8 @@ defmodule M51.Matrix.RawClient do
       {:ok, %HTTPoison.Response{status_code: 200, body: body}} ->
         {:ok, Jason.decode!(body)}
 
-      {:ok, %HTTPoison.Response{status_code: status_code, body: <<?<, _::binary>> = body}} ->
-        # That's not JSON!
-        {:error, status_code, body}
-
       {:ok, %HTTPoison.Response{status_code: status_code, body: body}} ->
-        {:error, status_code, Jason.decode!(body)}
+        {:error, status_code, body}
 
       {:error, %HTTPoison.Error{reason: reason}} ->
         {:error, nil, reason}