[TensorDock] Remove the tensordock from supported backeds #3092

Author: peterschmidt85

src/dstack/_internal/core/backends/tensordock/__init__.py

@@ -4,6 +4,8 @@
 
 from dstack._internal.core.models.common import CoreModel
 
+# TODO: TensorDock is deprecated and will be removed in the future
+
 
 class TensorDockAPIKeyCreds(CoreModel):
     type: Annotated[Literal["api_key"], Field(description="The type of credentials")] = "api_key"

src/dstack/_internal/core/backends/tensordock/api_client.py

@@ -91,7 +91,6 @@ async def test_returns_backend_types(self, client: AsyncClient):
             *(["nebius"] if sys.version_info >= (3, 10) else []),
             "oci",
             "runpod",
-            "tensordock",
             "vastai",
             "vultr",
         ]