Remove license header and zod import (#1809)

# READ CAREFULLY THEN REMOVE

Remove bullet points that are not relevant.

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## Description

Please provide a clear description of your changes.

---

## Type of Change

Please delete options that are not relevant.

- [ ] 🐛 Bug fix (non-breaking change which fixes an issue)
- [ ] ✨ New feature (non-breaking change which adds functionality)
- [ ] 💥 Breaking change (fix or feature with breaking changes)
- [ ] 📝 Documentation update
- [ ] 🎨 UI/UX improvement
- [ ] 🔒 Security enhancement
- [ ] ⚡ Performance improvement

## Areas Affected

Please check all that apply:

- [ ] Email Integration (Gmail, IMAP, etc.)
- [ ] User Interface/Experience
- [ ] Authentication/Authorization
- [ ] Data Storage/Management
- [ ] API Endpoints
- [ ] Documentation
- [ ] Testing Infrastructure
- [ ] Development Workflow
- [ ] Deployment/Infrastructure

## Testing Done

Describe the tests you've done:

- [ ] Unit tests added/updated
- [ ] Integration tests added/updated
- [ ] Manual testing performed
- [ ] Cross-browser testing (if UI changes)
- [ ] Mobile responsiveness verified (if UI changes)

## Security Considerations

For changes involving data or authentication:

- [ ] No sensitive data is exposed
- [ ] Authentication checks are in place
- [ ] Input validation is implemented
- [ ] Rate limiting is considered (if applicable)

## Checklist

- [ ] I have read the [CONTRIBUTING](https://github.com/Mail-0/Zero/blob/staging/.github/CONTRIBUTING.md) document
- [ ] My code follows the project's style guidelines
- [ ] I have performed a self-review of my code
- [ ] I have commented my code, particularly in complex areas
- [ ] I have updated the documentation
- [ ] My changes generate no new warnings
- [ ] I have added tests that prove my fix/feature works
- [ ] All tests pass locally
- [ ] Any dependent changes are merged and published

## Additional Notes

Add any other context about the pull request here.

## Screenshots/Recordings

Add screenshots or recordings here if applicable.

---

_By submitting this pull request, I confirm that my contribution is made under the terms of the project's license._

    
<!-- This is an auto-generated description by cubic. -->
---

## Summary by cubic
Removed the license header and unused zod import from sequential-thinking.ts to clean up the file.

<!-- End of auto-generated description by cubic. -->



<!-- This is an auto-generated comment: release notes by coderabbit.ai -->

## Summary by CodeRabbit

* **Chores**
  * Removed the license header comment and an unused import from internal files. No changes to features or functionality.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

Author: MrgSub

apps/server/src/lib/sequential-thinking.ts

@@ -1,23 +1,6 @@
-/*
- * Licensed to Zero Email Inc. under one or more contributor license agreements.
- * You may not use this file except in compliance with the Apache License, Version 2.0 (the "License").
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * Reuse or distribution of this file requires a license from Zero Email Inc.
- */
-
 import { McpServer } from '@modelcontextprotocol/sdk/server/mcp.js';
 import type { env } from 'cloudflare:workers';
 import { McpAgent } from 'agents/mcp';
-import { z } from 'zod';
 
 interface ThoughtData {
   thought: string;

apps/server/src/routes/agent/index.ts

@@ -51,7 +51,6 @@ import { processToolCalls } from './utils';
 import { env } from 'cloudflare:workers';
 import type { Connection } from 'agents';
 import { openai } from '@ai-sdk/openai';
-import { openai } from '@ai-sdk/openai';
 import { createDb } from '../../db';
 import { DriverRpcDO } from './rpc';
 import { eq } from 'drizzle-orm';