Remove deprecated InputParams class from GoogleVertexLLMService

The location and project_id fields were deprecated since 0.0.90 in
favor of direct __init__ parameters. Now that InputParams is removed,
project_id is required and location defaults to "us-east4" directly
in the signature.

src/pipecat/services/google/vertex/llm.py

@@ -61,58 +61,14 @@ class GoogleVertexLLMService(GoogleLLMService):
     Settings = GoogleVertexLLMSettings
     _settings: Settings
 
-    class InputParams(GoogleLLMService.InputParams):
-        """Input parameters specific to Vertex AI.
-
-        Parameters:
-            location: GCP region for Vertex AI endpoint (e.g., "us-east4").
-
-                .. deprecated:: 0.0.90
-                    Use `location` as a direct argument to
-                    `GoogleVertexLLMService.__init__()` instead.
-
-            project_id: Google Cloud project ID.
-
-                .. deprecated:: 0.0.90
-                    Use `project_id` as a direct argument to
-                    `GoogleVertexLLMService.__init__()` instead.
-        """
-
-        # https://cloud.google.com/vertex-ai/generative-ai/docs/learn/locations
-        location: Optional[str] = None
-        project_id: Optional[str] = None
-
-        def __init__(self, **kwargs):
-            """Initializes the InputParams."""
-            import warnings
-
-            with warnings.catch_warnings():
-                warnings.simplefilter("always")
-                if "location" in kwargs and kwargs["location"] is not None:
-                    warnings.warn(
-                        "GoogleVertexLLMService.InputParams.location is deprecated. "
-                        "Please provide 'location' as a direct argument to GoogleVertexLLMService.__init__() instead.",
-                        DeprecationWarning,
-                        stacklevel=2,
-                    )
-
-                if "project_id" in kwargs and kwargs["project_id"] is not None:
-                    warnings.warn(
-                        "GoogleVertexLLMService.InputParams.project_id is deprecated. "
-                        "Please provide 'project_id' as a direct argument to GoogleVertexLLMService.__init__() instead.",
-                        DeprecationWarning,
-                        stacklevel=2,
-                    )
-            super().__init__(**kwargs)
-
     def __init__(
         self,
         *,
         credentials: Optional[str] = None,
         credentials_path: Optional[str] = None,
         model: Optional[str] = None,
-        location: Optional[str] = None,
+        location: str = "us-east4",
-        project_id: Optional[str] = None,
+        project_id: str,
         params: Optional[GoogleLLMService.InputParams] = None,
         settings: Optional[Settings] = None,
         system_instruction: Optional[str] = None,
@@ -131,7 +87,7 @@ class GoogleVertexLLMService(GoogleLLMService):
                 .. deprecated:: 0.0.105
                     Use ``settings=GoogleVertexLLMService.Settings(model=...)`` instead.
 
-            location: GCP region for Vertex AI endpoint (e.g., "us-east4").
+            location: GCP region for Vertex AI endpoint. Defaults to "us-east4".
             project_id: Google Cloud project ID.
             params: Input parameters for the model.
 
@@ -161,34 +117,6 @@ class GoogleVertexLLMService(GoogleLLMService):
                 "Invalid parameter 'api_key'. Use 'credentials' or 'credentials_path' for Vertex AI authentication."
             )
 
-        # Handle deprecated InputParams fields (location/project_id extraction
-        # must happen before validation, regardless of settings)
-        if params and isinstance(params, GoogleVertexLLMService.InputParams):
-            if project_id is None:
-                project_id = params.project_id
-            if location is None:
-                location = params.location
-            # Convert to base InputParams
-            params = GoogleLLMService.InputParams(
-                **params.model_dump(exclude={"location", "project_id"}, exclude_unset=True)
-            )
-
-        # Validate project_id and location parameters
-        # NOTE: once we remove Vertex-specific InputParams class, we can update
-        #       __init__() signature as follows:
-        #       - location: str = "us-east4",
-        #       - project_id: str,
-        #       But for now, we need them as-is to maintain proper backward
-        #       compatibility.
-        if project_id is None:
-            raise ValueError("project_id is required")
-        if location is None:
-            # If location is not provided, default to "us-east4".
-            # Note: this is legacy behavior; ideally location would be
-            # required.
-            logger.warning("location is not provided. Defaulting to 'us-east4'.")
-            location = "us-east4"  # Default location if not provided
-
         # These need to be set before calling super().__init__() because
         # super().__init__() invokes _create_client(), which needs these.
         self._credentials = self._get_credentials(credentials, credentials_path)