battery: Relocate remove_health_popup() from mobile plugin

battery: Relocate remove_health_popup() from mobile plugin

*In this description, "core" refers to the deviced module below src.

Move function remove_health_popup from mobile plugin to core battery module.

[Reason]
When the battery health status is abnormal, core battery module reuqests launching popup.
The location where it requests to add or remove pop-ups is different.
Actually, battery health management responsibility should be moved to core battery module.
Because overall battery health is manged in core battery moudle not mobile plugin.
Also, remove_health_popup() is used only power-supply in core battery module.

As explained above, it can be seen that shotgun surgery and feature envy code smells
from the remove_health_popup().

[How to]
Delete the function from the mobile plguin battery module and move it to
the deviced core battery module.

Change-Id: I6e968e53552e41db947218b95ad3b1c98b74cf90
Signed-off-by: Yunhee Seo <yuni.seo@samsung.com>