fix doc

Author: udaij12

docs/token_authorization_api.md

@@ -2,7 +2,7 @@
 
 ## Configuration
 1. Enable token authorization by adding the provided plugin at start using the `--plugin-path` command.
-2. Torchserve will enable token authorization if the plugin is provided. In the current working directory a file `key_file.txt` will be generated.
+2. Torchserve will enable token authorization if the plugin is provided. In the current working directory a file `key_file.json` will be generated.
     1. Example key file:
 
     `Management Key: aadJv_R6 --- Expiration time: 2024-01-16T22:23:32.952499Z`

frontend/server/src/main/java/org/pytorch/serve/util/ConfigManager.java

@@ -21,7 +21,6 @@
 import java.security.KeyFactory;
 import java.security.KeyStore;
 import java.security.PrivateKey;
-import java.security.SecureRandom;
 import java.security.cert.Certificate;
 import java.security.cert.CertificateFactory;
 import java.security.cert.X509Certificate;
@@ -149,8 +148,6 @@ public final class ConfigManager {
     private boolean telemetryEnabled;
     private Logger logger = LoggerFactory.getLogger(ConfigManager.class);
 
-    private SecureRandom secureRandom = new SecureRandom();
-    private Base64.Encoder baseEncoder = Base64.getUrlEncoder();
     private boolean tokenAuthorizationEnabled;
     private Class<?> tokenClass;
     private Object tokenObject;