Fixed formatting for all files using pre-commit (#1670)

* Fixed formatting for all files using pre-commit

* Fixing formatting for all files

* Fixing unused imports

README.rst

@@ -53,7 +53,7 @@ Using pip::
     pip install torchtext
 
 **Note** LTS versions are distributed through a different channel than the other versioned releases.
-Please refer to https://pytorch.org/get-started/locally/ for details. 
+Please refer to https://pytorch.org/get-started/locally/ for details.
 
 Optional requirements
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