Revert "motify the mainacvitity"

This reverts commit f56812ca305943199ccbf9913b23d3cc4a559dd0.
整理commit f56812ca305943199ccbf9913b23d3cc4a559dd0

修改 MainActivity启动或关闭摔倒检测服务的位置
修改 标准化 f56812ca305943199ccbf9913b23d3cc4a559dd0 中的格式