Remove duplicate statsd SDK prebuilts.

They are now stored in prebuilts/module_sdk/StatsD for consistency with
all other modules.

This is a cherry-pick if the same change-id from rvc-qpr-dev-plus-aosp
to bring sc-dev into sync.

Bug: 188427719
Test: m nothing
Merged-In: Ia697a90345c358a7de1726a56548a321ecde90b0
Change-Id: Ia697a90345c358a7de1726a56548a321ecde90b0
10 files changed