Revert "Workaround for Floodgate prefixes with ProtocolLlib"

This reverts commit 94979a3
This reverts commit e82e7c7
This reverts commit b92911b
This reverts commit 03850ae
This reverts commit 8859ebb

core/src/main/resources/config.yml

@@ -236,8 +236,6 @@ autoLoginFloodgate: false
 #
 # To prevent conflicts from two different players having the same name, it is highly recommended using a
 #    'username-prefix' in floodgate/config.yml
-# Note: 'username-prefix' is currently broken when used with FastLogin and ProtocolLib.
-# A solution to this is to enable 'floodgatePrefixWorkaround' below.
 #
 # Possible values:
 #   false: Kick Bedrock players, if they are using an existing Premium Java account's name
@@ -264,14 +262,6 @@ allowFloodgateNameConflict: false
 # Enabling this might lead to people gaining unauthorized access to other's accounts!
 autoRegisterFloodgate: false
 
-# Make FastLogin inject the Floodgate name prefixes, instead of Floodgate.
-# This can fix prefixes, if you are using Floodgate alongside ProtocolLib.
-# If either of those plugins are not installed, this option will have no effect.
-# For more information visit: https://github.com/games647/FastLogin/issues/493
-# !!!!!!!! WARNING: FLOODGATE SUPPORT IS AN EXPERIMENTAL FEATURE !!!!!!!!
-# Enabling this might lead to people gaining unauthorized access to other's accounts!
-floodgatePrefixWorkaround: false
-
 # This option resembles the vanilla configuration option 'enforce-secure-profile' in the 'server.properties' file.
 # It verifies if the incoming cryptographic key in the login request from the player is signed by Mojang. This key
 # is necessary for servers where you or other in-game players want to verify that a chat message sent and signed by