cleanup explorer dependencies

explorer/Cargo.toml

@@ -10,7 +10,6 @@ repository = "https://github.com/input-output-hk/jormungandr"
 version = "0.9.1"
 
 [dependencies]
-backoff = {version = "0.3.0", features = ["tokio"]}
 futures = "0.3.5"
 futures-channel = "0.3.5"
 futures-util = "0.3.5"
@@ -19,7 +18,6 @@ async-graphql-warp = "2.6.0"
 serde = {version = "1.0.114", features = ["derive"]}
 serde_json = "1.0.56"
 serde_yaml = "0.8.13"
-sloggers = "1.0.1"
 structopt = "0.3.15"
 thiserror = "1.0.20"
 url = "2.1.1"
@@ -29,7 +27,6 @@ tracing-futures = "0.2"
 tracing-gelf = { version = "0.5", optional = true }
 tracing-journald = { version = "0.1.0", optional = true }
 tracing-subscriber = { version = "0.2", features = ["fmt", "json"] }
-tracing-appender = "0.1.2"
 tokio = { version = "^1.4", features = ["rt-multi-thread", "time", "sync", "rt", "signal", "test-util"] }
 tokio-stream = { version = "0.1.4", features = ["sync"] }
 tokio-util = { version = "0.6.0", features = ["time"] }
@@ -48,7 +45,6 @@ chain-crypto = {git = "https://github.com/input-output-hk/chain-libs.git", branc
 chain-impl-mockchain = {git = "https://github.com/input-output-hk/chain-libs.git", branch = "master"}
 chain-time = {git = "https://github.com/input-output-hk/chain-libs.git", branch = "master"}
 chain-vote = {git = "https://github.com/input-output-hk/chain-libs.git", branch = "master"}
-chain-network = {git = "https://github.com/input-output-hk/chain-libs.git", branch = "master"}
 chain-ser = {git = "https://github.com/input-output-hk/chain-libs.git", branch = "master"}
 chain-watch = { git = "https://github.com/input-output-hk/chain-libs.git", branch = "heterogeneous-client-api" }
 imhamt = {git = "https://github.com/input-output-hk/chain-libs.git", branch = "master"}