docs: remove comment regarding tool streaming in openai.md (#7960)

docs/openai.md

@@ -215,7 +215,7 @@ curl http://localhost:11434/v1/embeddings \
 - [x] JSON mode
 - [x] Reproducible outputs
 - [x] Vision
-- [x] Tools (streaming support coming soon)
+- [x] Tools
 - [ ] Logprobs
 
 #### Supported request fields