Stop returning intent data in QuickContact in onActivityResult

Contacts code does not use the data, only the result code, and it is a potential URI permission grant attack angle.
Clean up unused code in ImplicitIntentsUtil

Bug: 178825358
Test: Manual test with POC app. Observed crash instead of contacts data
read.

Change-Id: Ie8da7faef3611eacd14eda7c0067e2aa24805a10