[tps-client] Remove unused serial_test and solana-test-validator (#4917)

Cargo.lock

@@ -10250,7 +10250,6 @@ name = "solana-tps-client"
 version = "2.2.0"
 dependencies = [
  "log",
- "serial_test",
  "solana-account",
  "solana-client",
  "solana-client-traits",
@@ -10269,7 +10268,6 @@ dependencies = [
  "solana-signature",
  "solana-signer",
  "solana-streamer",
- "solana-test-validator",
  "solana-tpu-client",
  "solana-transaction",
  "solana-transaction-error",

tps-client/Cargo.toml

@@ -35,9 +35,7 @@ solana-transaction-status = { workspace = true }
 thiserror = { workspace = true }
 
 [dev-dependencies]
-serial_test = { workspace = true }
 solana-runtime = { workspace = true, features = ["dev-context-only-utils"] }
-solana-test-validator = { workspace = true }
 tempfile = { workspace = true }
 
 [package.metadata.docs.rs]