chore: remove unused translations

Author: NgLoader

zip-plugin/src/main/java/net/imprex/zip/config/MessageKey.java

@@ -15,7 +15,6 @@ public enum MessageKey {
 	CommandHelpGive("commandHelpGive", "§8/§7zip §egive §7[§etype§7] §7<§eplayer§7> §8| §7Give yourself a backpack§8."),
 	CommandHelpType("commandHelpType", "§8/§7zip §etype §8| §7Get a list of all backpacks§8."),
 	CommandHelpLore("commandHelpLore", "§8/§7zip §elore §8| §7Write a custom lore§8."),
-	CommandHelpMigrate("commandHelpMigrate", "§8/§7zip §emigrate §8| §7Migrate all existing backpacks to the new format§8."),
 	CommandHelpEnd("commandHelpEnd", "§8[]§7========== §eZeroInventoryProblems §7==========§8[]"),
 	CommandTypeStart("commandTypeStart", "§8[]§7========== §eZeroInventoryProblems Types §7==========§8[]"),
 	CommandTypeContent("commandTypeContent", "  §8-§e{0}"),

zip-plugin/src/main/resources/lang/en_US.yml

@@ -11,7 +11,6 @@ commandHelpLink: "&8/&7zip &elink &7<&ecancel&7> &8| &7Link multiple backpacks o
 commandHelpGive: "&8/&7zip &egive &7[&etype&7] &7<&eplayer&7> &8| &7Give yourself a backpack&8."
 commandHelpType: "&8/&7zip &etype &8| &7Get a list of all backpacks&8."
 commandHelpLore: "&8/&7zip &elore &8| &7Write a custom lore&8."
-CommandHelpMigrate: "&8/&7zip &emigrate &8| &7Migrate all existing backpacks to the new format&8."
 commandHelpEnd: "&8[]&7========== &eZeroInventoryProblems &7==========&8[]"
 commandTypeStart: "&8[]&7========== &eZeroInventoryProblems Types &7==========&8[]"
 commandTypeContent: "  &8-&e{0}"