BinaryTransparencyService: fix `getOriginalApexPreinstalledLocation`

Currently, the `getOriginalApexPreinstalledLocation` method takes
two parameters but the second parameter is never used.

In this change, we remove the second (unused) parameter and fixed
the call site.

Bug: 266033262
Test: atest BinaryTransparencyServiceTest
Change-Id: If5df7ff1e8264cf90899cbd0034f58e4c2fd246c