Enable streaming on o1 since it's now supported

For real this time, it seems

This reverts commit 148f7d8.

Author: codeofdusk

src/gptcmd/llm/openai.py

@@ -167,9 +167,6 @@ def _estimate_cost_in_cents(
             + Decimal(sampled_tokens) * sampled_scale
         ) * Decimal("100")
 
-    def _supports_streaming(self) -> bool:
-        return not self.model.startswith("o1")
-
     def complete(self, messages: Sequence[Message]) -> LLMResponse:
         kwargs = {
             "model": self.model,
@@ -246,16 +243,11 @@ def validate_api_params(self, params):
 
     @property
     def stream(self) -> bool:
-        return self._supports_streaming() and self._stream
+        return self._stream
 
     @stream.setter
     def stream(self, val: bool):
-        if not self._supports_streaming():
-            raise NotImplementedError(
-                "Streamed responses are not supported by this model"
-            )
-        else:
-            self._stream = val
+        self._stream = val
 
     @property
     def valid_models(self) -> Iterable[str]: