tls: remove unused arg to createSecureContext()

The context arg is unused by node or its test suites and undocumented.
Remove it.

PR-URL: #24241
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>

lib/_tls_common.js

@@ -35,22 +35,13 @@ const { SSL_OP_CIPHER_SERVER_PREFERENCE } = internalBinding('constants').crypto;
 let toBuf = null;
 
 const { SecureContext: NativeSecureContext } = internalBinding('crypto');
-function SecureContext(secureProtocol, secureOptions, context) {
+function SecureContext(secureProtocol, secureOptions) {
   if (!(this instanceof SecureContext)) {
-    return new SecureContext(secureProtocol, secureOptions, context);
+    return new SecureContext(secureProtocol, secureOptions);
   }
 
-  if (context) {
-    this.context = context;
-  } else {
-    this.context = new NativeSecureContext();
-
-    if (secureProtocol) {
-      this.context.init(secureProtocol);
-    } else {
-      this.context.init();
-    }
-  }
+  this.context = new NativeSecureContext();
+  this.context.init(secureProtocol);
 
   if (secureOptions) this.context.setOptions(secureOptions);
 }
@@ -68,19 +59,17 @@ function validateKeyCert(name, value) {
 exports.SecureContext = SecureContext;
 
 
-exports.createSecureContext = function createSecureContext(options, context) {
+exports.createSecureContext = function createSecureContext(options) {
   if (!options) options = {};
 
   var secureOptions = options.secureOptions;
   if (options.honorCipherOrder)
     secureOptions |= SSL_OP_CIPHER_SERVER_PREFERENCE;
 
-  const c = new SecureContext(options.secureProtocol, secureOptions, context);
+  const c = new SecureContext(options.secureProtocol, secureOptions);
   var i;
   var val;
 
-  if (context) return c;
-
   // NOTE: It's important to add CA before the cert to be able to load
   // cert's issuer in C++ code.
   const { ca } = options;