Fix log level being forced to warning

This code shouldn't be here; the log level was already set to its proper
default value via the earlier FromConfig call.

llarp/router/router.cpp

@@ -1401,8 +1401,6 @@ namespace llarp
         }
       });
     }
-    if (log::get_level_default() != log::Level::off)
-      log::reset_level(log::Level::warn);
     return _running;
   }