feat: remove sspichallenge event on Connection

BREAKING CHANGE: This removes the `sspichallenge` event on `Connection`.

src/connection.ts

@@ -1769,18 +1769,7 @@ class Connection extends EventEmitter {
    */
   on(event: 'secure', listener: (cleartext: import('tls').TLSSocket) => void): this
 
-  /**
-   * A SSPI token was send by the server.
-   *
-   * @deprecated
-   */
-  on(event: 'sspichallenge', listener: (token: import('./token/token').SSPIToken) => void): this
-
   on(event: string | symbol, listener: (...args: any[]) => void) {
-    if (event === 'sspichallenge') {
-      emitSSPIChallengeEventDeprecationWarning();
-    }
-
     return super.on(event, listener);
   }
 
@@ -1840,10 +1829,6 @@ class Connection extends EventEmitter {
    * @private
    */
   emit(event: 'rollbackTransaction'): boolean
-  /**
-   * @private
-   */
-  emit(event: 'sspichallenge', token: import('./token/token').SSPIToken): boolean
 
   emit(event: string | symbol, ...args: any[]) {
     return super.emit(event, ...args);
@@ -3128,21 +3113,6 @@ class Connection extends EventEmitter {
   }
 }
 
-let sspichallengeEventDeprecationWarningEmitted = false;
-function emitSSPIChallengeEventDeprecationWarning() {
-  if (sspichallengeEventDeprecationWarningEmitted) {
-    return;
-  }
-
-  sspichallengeEventDeprecationWarningEmitted = true;
-
-  process.emitWarning(
-    'The `sspichallenge` event is deprecated and will be removed.',
-    'DeprecationWarning',
-    Connection.prototype.on
-  );
-}
-
 export default Connection;
 module.exports = Connection;
 

src/token/handler.ts

@@ -278,8 +278,6 @@ export class Login7TokenHandler extends TokenHandler {
       this.connection.ntlmpacket = token.ntlmpacket;
       this.connection.ntlmpacketBuffer = token.ntlmpacketBuffer;
     }
-
-    this.connection.emit('sspichallenge', token);
   }
 
   onDatabaseChange(token: DatabaseEnvChangeToken) {