Removes undesirable invokation of checkUriPermission

Slice uses internal permission control, either the provider app can
specify a list of auto-grant permission, or the host app can request
user's consent on presenting slices from the provider app. In both cases
the invokation of checkUriPermission is non-neccessary.

Bug: 140727941
Test: atest SliceManagerServiceTest
Change-Id: Iac808eda08ac188185cd27f7ab8ce13accf7fce4