Remove deprecated entitlement API

The deprecated entitlement APIs[1] is introduced in the Q
development cycle. It should be replaced by new APIs[2][3].

[1] https://android-review.googlesource.com/c/platform/frameworks/base/+/874220
[2] https://android-review.googlesource.com/c/platform/frameworks/base/+/920354
[3] https://android-review.googlesource.com/c/platform/frameworks/base/+/927513

Test: -build, flash, boot
bug: 126701557
bug: 126392011
Change-Id: I96487e9038c07363680a76db840994719d7ff768