fix unneeded dependency

Signed-off-by: Dave Huseby <[email protected]>

Author: dhuseby

Cargo.toml

@@ -9,7 +9,5 @@ readme = "README.md"
 license = "Apache-2.0"
 
 [dependencies]
-multibase = "0.9"
-multicodec = { version = "0.2", git = "https://github.com/cryptidtech/rust-multicodec.git" }
 thiserror = "1.0"
 unsigned-varint = { version = "0.8", features = ["std"] }