Remove deprecated isfinalxxx options

Summary:
The -deprecatedrpc=isfinalblock_noerror and -deprecatedrpc=isfinaltransaction_noerror were added in v0.262 for compatibility reason with the behavior of previous 0.26.x versions, and can now be safely removed.

Depends on D14368.

Test Plan:

./test/functional/test_runner.py rpc_deprecated

Reviewers: #bitcoin_abc, PiRK

Reviewed By: #bitcoin_abc, PiRK

Differential Revision: https://reviews.bitcoinabc.org/D14369