fix: del header

Author: akitaSummer

plugin/controller/lib/impl/mcp/MCPControllerRegister.ts

@@ -84,7 +84,6 @@ export class MCPControllerRegister implements ControllerRegister {
       ctx.respond = false;
       ctx.set({
         'content-type': 'text/event-stream',
-        'cache-control': 'no-cache',
         'transfer-encoding': 'chunked',
       });
       if (MCPControllerRegister.hooks.length > 0) {
@@ -168,7 +167,6 @@ export class MCPControllerRegister implements ControllerRegister {
         ctx.respond = false;
         ctx.set({
           'content-type': 'text/event-stream',
-          'cache-control': 'no-cache',
           'transfer-encoding': 'chunked',
         });
         const transport = self.streamTransports[sessionId];