Removed unused f-string (#273)

Author: sarveshwar-s

clip/clip.py

@@ -67,7 +67,7 @@ def _download(url: str, root: str):
                 loop.update(len(buffer))
 
     if hashlib.sha256(open(download_target, "rb").read()).hexdigest() != expected_sha256:
-        raise RuntimeError(f"Model has been downloaded but the SHA256 checksum does not not match")
+        raise RuntimeError("Model has been downloaded but the SHA256 checksum does not not match")
 
     return download_target