Remove unused imports

lua/cave/config.lua

@@ -2,11 +2,7 @@ local Meta = require "cave.meta"
 local Python = require "cave.python"
 local Context = require "cave.context"
 
-local Map = Meta.Map
-local Optional = Meta.Optional
-local Str = Meta.String
 local validate = Meta.validate
-local Table = Meta.Table
 
 ---@class cave.Config
 ---@field python_interpreters table<string,cave.Python.Interpreter>
@@ -26,6 +22,7 @@ end
 ---@field context_ cave.Context
 local Factory = Meta.derive("Config.Factory", Context)
 
+---@param context cave.Context
 function Factory:init(context)
   Context.init(self, context.dir, context.name, context.uuid)
   self.python_interpreters_ = {}