lib: Drop unused crates

Drop the following unused crates in keylime lib:

- once_cell
- retry-policies
- serde_derive
- url

Signed-off-by: Anderson Toshiyuki Sasaki <[email protected]>

Author: ansasaki

Cargo.lock

@@ -22,17 +22,14 @@ httpdate.workspace = true
 libc.workspace = true
 keylime-macros.workspace = true
 log.workspace = true
-once_cell.workspace = true
 openssl.workspace = true
 pest.workspace = true
 pest_derive.workspace = true
 rand.workspace = true
 reqwest.workspace = true
 reqwest-middleware.workspace = true
 reqwest-retry.workspace = true
-retry-policies.workspace = true
 serde.workspace = true
-serde_derive.workspace = true
 serde_json.workspace = true
 static_assertions.workspace = true
 tempfile.workspace = true
@@ -41,7 +38,6 @@ tss-esapi.workspace = true
 picky-asn1-der.workspace = true
 picky-asn1-x509.workspace = true
 tokio.workspace = true
-url.workspace = true
 uuid.workspace = true
 zip.workspace = true
 zmq = {version = "0.9.2", optional = true}