Move IoUtils#deleteContents from CorePlatformApi set to framework

As a part of internal core libraries cleanup move usages of
IoUtils#deleteContents from CorePlatformApi set to framework.

Bug: 154796679
Test: m update-api
Change-Id: If7037029026b6753ab64be09aa52c40e04d5c7b1
2 files changed
tree: 7aae7f8bc2476a655339fb11161497ef99e2b8ce
  1. framework/
  2. service/
  3. services/
  4. tests/
  5. OWNERS
  6. TEST_MAPPING