Remove serde_json from rest-api-resources feature
This appears to not be required by this feature, which then cases an
linting error in lib.rs.
@@ -107,7 +107,7 @@ batch-submitter = ["base64", "futures", "reqwest", "uuid", "url"]
postgres = ["diesel/postgres", "diesel_migrations", "log"]
rest-api-actix-web-3 = [
"actix-web", "futures", "futures-util", "rest-api-resources", "sqlite", "postgres", "url"]
-rest-api-resources = ["cylinder", "sabre-sdk", "log", "reqwest", "serde_json", "url"]
+rest-api-resources = ["cylinder", "sabre-sdk", "log", "reqwest", "url"]
sawtooth-compat = [
"sabre-sdk",
"sawtooth-sdk"
