Remove Arrays.checkOffsetAndCount from the greylist.

This method is being removed. All usages of this @hide method in the
platform have already been removed. For an analysis of the usage in
apps, see the bug.

Bug: 78447530
Test: cts-tradefed run cts-dev -m CtsLibcoreTestCases

(cherry picked from commit 094f08bc)

Change-Id: I60a158654ad962c8e3b5282c035dae0c014903d0
Merged-In: Ic89cf0775170393fe906f581364bff0e852958ef