removes use of sc_client::Client from sc-rpc (#5063)

* removes use of sc_client::Client from sc-rpc

* remove Client impl from sc-finality-benches

* remove client impl from sc-finality-grandpa

* read_proof accepts iterator

* remove generic Executor param from ExecutorProvider

* fix long ass line

* code style changes

* merge with master

Co-authored-by: Arkadiy Paronyan <arkady.paronyan@gmail.com>

substrate/Cargo.lock

@@ -3569,6 +3569,7 @@ dependencies = [
  "sc-basic-authorship",
  "sc-cli",
  "sc-client",
+ "sc-client-api",
  "sc-consensus-aura",
  "sc-executor",
  "sc-finality-grandpa",
@@ -5777,6 +5778,7 @@ dependencies = [
  "sp-runtime",
  "sp-state-machine",
  "sp-std",
+ "sp-storage",
  "sp-test-primitives",
  "sp-transaction-pool",
  "sp-trie",