Remove f-string device creation on PyTorch GPU pipelines.

Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

src/transformers/pipelines.py

@@ -335,7 +335,7 @@ class Pipeline(_ScikitCompat):
         self.tokenizer = tokenizer
         self.modelcard = modelcard
         self.framework = framework
-        self.device = device if framework == "tf" else torch.device("cpu" if device < 0 else f"cuda:{device}")
+        self.device = device if framework == "tf" else torch.device("cpu" if device < 0 else "cuda:{}".format(device))
         self.binary_output = binary_output
         self._args_parser = args_parser or DefaultArgumentHandler()