test: delete log override from influxdb bridge test script

scripts/test/influx/influx-bridge.conf

@@ -34,16 +34,6 @@ bridges {
     }
   }
 }
-log {
-  console_handler {enable = true, level = "warning"}
-  file_handlers {
-    default {
-      enable = false
-      file = "log/emqx.log"
-      level = "warning"
-    }
-  }
-}
 rule_engine {
   ignore_sys_message = true
   jq_function_default_timeout = "10s"