Revert "Enforce calling uid when using attribution source."

This reverts commit 264143e8.

Reason for revert: breaking system UI for auto b/189350931 b/189317959

Bug: 188391719
Bug: 189350931
BUg: 189317959
Test: atest CtsPermissionTestCases:android.permission.cts.NearbyDevicesPermissionTest
Test: build & flash, check bluetooth works

Change-Id: I00234684a52cf4bdc72989e4fb8704981ad9e220