Revert tokenizers (#423)

* Revert "fix: add missing "with" in README"

This reverts commit bf1e7f1f17.

* Revert "feat: tokenizers (#407)"

This reverts commit d2095ba267.

lua/avante/providers/claude.lua

@@ -6,7 +6,6 @@ local P = require("avante.providers")
 local M = {}
 
 M.api_key_name = "ANTHROPIC_API_KEY"
-M.tokenizer_id = "gpt-4o"
 
 ---@param prompt_opts AvantePromptOptions
 M.parse_message = function(prompt_opts)
@@ -29,10 +28,8 @@ M.parse_message = function(prompt_opts)
     local user_prompt_obj = {
       type = "text",
       text = user_prompt,
+      cache_control = { type = "ephemeral" },
     }
-    if Utils.tokens.calculate_tokens(user_prompt_obj.text) > 1024 then
-      user_prompt_obj.cache_control = { type = "ephemeral" }
-    end
 
     table.insert(message_content, user_prompt_obj)
   end