License: correct frontmatter to MIT (matches upstream DeepSeek-V4-Flash)

Upstream deepseek-ai/DeepSeek-V4-Flash is MIT-licensed per its LICENSE file,
not under a custom deepseek-license. This artifact inherits that. Drops the
now-unused license_name and license_link fields.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

README.md

@@ -1,7 +1,5 @@
 ---
-license: other
-license_name: deepseek-license
-license_link: LICENSE
+license: mit
 base_model: deepseek-ai/DeepSeek-V4-Flash
 tags:
   - compressed-tensors