Revert "Move default sounds to /product"

This reverts commit b8f6d0d5bf206c32439cbdc0f22f41613ae20978.

SettingsProvider doesn't migrate ringtone settings so users would be
stuck with a broken configuration. Keep the files in /system.

Issue: FP2A10-158
Change-Id: Ia1371b20a737afb666a4da5ffea7b1c5581032c7
21 files changed