Undo latest merge

Author: ream88

lib/bypass/plug.ex

@@ -18,14 +18,7 @@ defmodule Bypass.Plug do
             conn
         catch
           class, reason ->
-            stacktrace = unquote do
-              if Version.match?(System.version(), ">= 1.7.0") do
-                quote do: __STACKTRACE__
-              else
-                quote do: System.stacktrace()
-              end
-            end
-            
+            stacktrace = __STACKTRACE__
             put_result(pid, route, ref, {:exit, {class, reason, stacktrace}})
             :erlang.raise(class, reason, stacktrace)
         end