Remove duplicate Gemini 2.0 Flash entry in supported-models.mdx

Co-authored-by: julialeex <188911656+julialeex@users.noreply.github.com>

Author: Copilot

docs/cody/capabilities/supported-models.mdx

@@ -39,7 +39,6 @@ Cody supports a variety of cutting-edge large language models for use in chat an
 | Anthropic    | [Claude Opus 4.5 w/ Thinking](https://docs.anthropic.com/en/docs/about-claude/models/overview)                                                | ✅                | ✅                 |
 | Google       | [Gemini 1.5 Pro](https://deepmind.google/technologies/gemini/pro/)                                                                            | ✅ (beta)         | ✅\*               |
 | Google       | [Gemini 2.0 Flash](https://deepmind.google/technologies/gemini/flash/)                                                                        | ✅                | ✅\*               |
-| Google       | [Gemini 2.0 Flash](https://deepmind.google/technologies/gemini/flash/)                                                                        | ✅                | ✅\*               |
 | Google       | [Gemini 2.5 Pro](https://cloud.google.com/vertex-ai/generative-ai/docs/models/gemini/2-5-pro)                                                 | ✅                | ✅\*               |
 | Google       | [Gemini 2.5 Flash](https://cloud.google.com/vertex-ai/generative-ai/docs/models/gemini/2-5-flash)                                             | ✅                | ✅\*               |
 | Google       | [Gemini 3 Pro](https://docs.cloud.google.com/vertex-ai/generative-ai/docs/models/gemini/3-pro)                                                | ✅                | ✅\*               |