Revert "6.0 release"

This reverts commit a0aea8f030.

Data/Scripts/016_UI/015_UI_Options.rb

@@ -14,7 +14,6 @@ class PokemonSystem
   attr_accessor :sevolume
   attr_accessor :textinput
   attr_accessor :quicksurf
-  attr_accessor :level_caps
   attr_accessor :battle_type
   attr_accessor :download_sprites
 
@@ -572,12 +571,6 @@ class PokemonOption_Scene
                               "Start surfing automatically when interacting with water"
     )
 
-    options << EnumOption.new(_INTL("Level caps"), [_INTL("Off"), _INTL("On")],
-                              proc { $PokemonSystem.level_caps },
-                              proc { |value| $PokemonSystem.level_caps = value },
-                              "Prevents leveling above the next gym leader's highest leveled Pokemon"
-    )
-
     return options
   end