lint: remove unused switch statement

Author: dougwilson

lib/protocol/sequences/Handshake.js

@@ -34,12 +34,6 @@ Handshake.prototype.determinePacket = function determinePacket(firstByte, parser
 };
 
 Handshake.prototype['AuthSwitchRequestPacket'] = function (packet) {
-  switch (packet.authMethodName) {
-    case 'mysql_native_password':
-    case 'mysql_old_password':
-    default:
-  }
-
   if (packet.authMethodName === 'mysql_native_password') {
     var challenge = packet.authMethodData.slice(0, 20);