Revert "Change from deprecated telephony api"

Revert submission 19279477

Reason for revert: b/240223150
Reverted Changes:
I1bef3f309:Remove support for COMBINED_SIGNAL_ICONS
I38f76a746:Create a MobileStatusTrackerFactory
I0b1dd8e71:Change from deprecated telephony api
Id1a02134f:[Cleanup] Order NetworkController's intent filters...
I405ad3858:Add an @Inject-able MobileSignalControllerFactory

Change-Id: I6b1a152d01eeb938b2e1a286e69e2994775ceb43