remove getter from transaction storage pallet (#4885)

### ISSUE
Link to the issue:
https://github.com/paritytech/polkadot-sdk/issues/3326
cc @muraca 

Deliverables
- [Deprecation] remove pallet::getter usage from
pallet-transaction-storage


### Test Outcomes
___
cargo test -p pallet-transaction-storage --features runtime-benchmarks 

running 9 tests
test mock::test_genesis_config_builds ... ok
test tests::burns_fee ... ok
test mock::__construct_runtime_integrity_test::runtime_integrity_tests
... ok
test tests::discards_data ... ok
test tests::renews_data ... ok
test benchmarking::bench_renew ... ok
test benchmarking::bench_store ... ok
test tests::checks_proof ... ok
test benchmarking::bench_check_proof_max has been running for over 60
seconds
test benchmarking::bench_check_proof_max ... ok

test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered
out; finished in 72.57s

   Doc-tests pallet-transaction-storage

running 0 tests

test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered
out; finished in 0.00s

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