remove unused ewma crate now that we have our own

Cargo.lock

@@ -2035,12 +2035,6 @@ version = "2.5.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0206175f82b8d6bf6652ff7d71a1e27fd2e4efde587fd368662814d6ec1d9ce0"
 
-[[package]]
-name = "ewma"
-version = "0.1.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2f20267f3a8b678b7151c0c508002e79126144a5d47badddec7f31ddc1f4c754"
-
 [[package]]
 name = "eyre"
 version = "0.6.8"
@@ -6935,7 +6929,6 @@ dependencies = [
  "entities",
  "ethbloom",
  "ethers",
- "ewma",
  "fdlimit",
  "flume",
  "fstrings",

web3_proxy/Cargo.toml

@@ -53,7 +53,6 @@ counter = "0.5.7"
 derive_more = { version = "0.99.17", features = ["nightly"] }
 ethbloom = { version = "0.13.0", features = ["serialize"] }
 ethers = { version = "2.0.7", default-features = false, features = ["rustls", "ws"] }
-ewma = "0.1.1"
 fdlimit = "0.2.1"
 flume = "0.10.14"
 fstrings = "0.2"