fix EthersDB deadlock

[DoTheBestToGetTheBest]

related with #1056

actually removing the way we use futures::executor::block_on with tokio async

we're using now Handle::block_on instead of (futures::executor::block_on) so we can have futures executed in same context of tokio runtime and we can then avoid deadlocks

@rakita do you suggest me i allow unused crates to fix clippy error ?

[rakita]

lgtm

[pawurb]

Hi. I'm just starting to use this project. I was going through examples and this change seems to be breaking https://github.com/bluealloy/revm/blob/main/examples/fork_ref_transact.rs with following backtrace:

.cargo/git/checkouts/revm-bf744d8ffabcbad9/5736d1f/crates/revm/src/db/ethersdb.rs:27:18:
Cannot start a runtime from within a runtime. This happens because a function (like `block_on`) attempted to block the current thread while the thread is being used to drive asynchronous tasks.
stack backtrace:
   0: rust_begin_unwind
             at /rustc/a28077b28a02b92985b3a3faecf92813155f1ea1/library/std/src/panicking.rs:597:5
   1: core::panicking::panic_fmt
             at /rustc/a28077b28a02b92985b3a3faecf92813155f1ea1/library/core/src/panicking.rs:72:14
   2: tokio::runtime::context::runtime::enter_runtime
             at /Users/pablo/.cargo/registry/src/index.crates.io-6f17d22bba15001f/tokio-1.36.0/src/runtime/context/runtime.rs:68:5
   3: tokio::runtime::handle::Handle::block_on
             at /Users/pablo/.cargo/registry/src/index.crates.io-6f17d22bba15001f/tokio-1.36.0/src/runtime/handle.rs:309:9
   4: revm::db::ethersdb::EthersDB<M>::new
             at /Users/pablo/.cargo/git/checkouts/revm-bf744d8ffabcbad9/5736d1f/crates/revm/src/db/ethersdb.rs:26:40
   5: fork_ref_transact::main::{{closure}}
             at ./src/main.rs:49:24
   6: tokio::runtime::park::CachedParkThread::block_on::{{closure}}
             at /Users/pablo/.cargo/registry/src/index.crates.io-6f17d22bba15001f/tokio-1.36.0/src/runtime/park.rs:281:63
   7: tokio::runtime::coop::with_budget
             at /Users/pablo/.cargo/registry/src/index.crates.io-6f17d22bba15001f/tokio-1.36.0/src/runtime/coop.rs:107:5
   8: tokio::runtime::coop::budget
             at /Users/pablo/.cargo/registry/src/index.crates.io-6f17d22bba15001f/tokio-1.36.0/src/runtime/coop.rs:73:5
   9: tokio::runtime::park::CachedParkThread::block_on
             at /Users/pablo/.cargo/registry/src/index.crates.io-6f17d22bba15001f/tokio-1.36.0/src/runtime/park.rs:281:31
  10: tokio::runtime::context::blocking::BlockingRegionGuard::block_on
             at /Users/pablo/.cargo/registry/src/index.crates.io-6f17d22bba15001f/tokio-1.36.0/src/runtime/context/blocking.rs:66:9
  11: tokio::runtime::scheduler::multi_thread::MultiThread::block_on::{{closure}}
             at /Users/pablo/.cargo/registry/src/index.crates.io-6f17d22bba15001f/tokio-1.36.0/src/runtime/scheduler/multi_thread/mod.rs:87:13
  12: tokio::runtime::context::runtime::enter_runtime
             at /Users/pablo/.cargo/registry/src/index.crates.io-6f17d22bba15001f/tokio-1.36.0/src/runtime/context/runtime.rs:65:16
  13: tokio::runtime::scheduler::multi_thread::MultiThread::block_on
             at /Users/pablo/.cargo/registry/src/index.crates.io-6f17d22bba15001f/tokio-1.36.0/src/runtime/scheduler/multi_thread/mod.rs:86:9
  14: tokio::runtime::runtime::Runtime::block_on
             at /Users/pablo/.cargo/registry/src/index.crates.io-6f17d22bba15001f/tokio-1.36.0/src/runtime/runtime.rs:350:45
  15: fork_ref_transact::main
             at ./src/main.rs:106:5
  16: core::ops::function::FnOnce::call_once
             at /rustc/a28077b28a02b92985b3a3faecf92813155f1ea1/library/core/src/ops/function.rs:250:5