refactor(lsp): remove lsp_servers - duplicates OpenCode's LspServers

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

src/tools/index.ts

@@ -1,6 +1,5 @@
 import {
   lsp_diagnostics,
-  lsp_servers,
   lsp_prepare_rename,
   lsp_rename,
   lspManager,
@@ -54,7 +53,6 @@ export function createBackgroundTools(manager: BackgroundManager, client: Openco
 
 export const builtinTools: Record<string, ToolDefinition> = {
   lsp_diagnostics,
-  lsp_servers,
   lsp_prepare_rename,
   lsp_rename,
   ast_grep_search,

src/tools/lsp/index.ts

@@ -3,4 +3,5 @@ export * from "./constants"
 export * from "./config"
 export * from "./client"
 export * from "./utils"
-export * from "./tools"
+// NOTE: lsp_servers removed - duplicates OpenCode's built-in LspServers
+export { lsp_diagnostics, lsp_prepare_rename, lsp_rename } from "./tools"