remove unused import

Author: Gerrygames

proxy/src/main/java/com/velocitypowered/proxy/connection/client/InitialLoginSessionHandler.java

@@ -39,7 +39,6 @@
 import com.velocitypowered.proxy.protocol.StateRegistry;
 import com.velocitypowered.proxy.protocol.netty.MinecraftDecoder;
 import com.velocitypowered.proxy.protocol.packet.ClientboundCookieRequestPacket;
-import com.velocitypowered.proxy.protocol.packet.ClientboundStoreCookiePacket;
 import com.velocitypowered.proxy.protocol.packet.EncryptionRequestPacket;
 import com.velocitypowered.proxy.protocol.packet.EncryptionResponsePacket;
 import com.velocitypowered.proxy.protocol.packet.LoginPluginResponsePacket;