通过首先使用代码asp.net mvc删除旧（过去的日期）条目来保持表小的最佳方法

I would like to know the best way to remove old entries (with a date from past) from a table that is created using the 'SpaceEvent' entity with EF code first. The objective is to keep the table as small as possible.I would like to know the best way to remove old