Delete core_tiny.mk

There are no descendants of this mk in AOSP. Move the content that was
shared with core_minimal.mk to base.mk (ContactsProvider and
DefaultContainerService)

Bug: 80410283
Test: diff product variables with multiproduct_kati
Change-Id: I95431b3db789e9c347bb37109a3ac7f627025f96
Merged-In: I95431b3db789e9c347bb37109a3ac7f627025f96