remove small part

Author: younesbelkada

tests/mixed_int8/README.md

@@ -117,21 +117,4 @@ and you can see
 
 ![Screenshot 2022-08-15 at 15.12.33.png](https://s3.amazonaws.com/moonup/production/uploads/1660569176504-62441d1d9fdefb55a0b7d12c.png)
 
-If you see that the file is linked to the wrong CUDA version (here 10.2), find the correct location for `libcudart.so` (`find --name libcudart.so`) and replace the environment variable `LD_LIBRARY_PATH` with the one containing the correct `libcudart.so` file.
-
-### If `bitsandbytes` installation breaks everything:
-
-It happened in a previous version that after installing `bitsandbytes` and running this script:
-
-```py
-import bitsandbytes as bnb
-```
-
-we got an error:
-
-```
-major, minor, revision = ...
-Too many values to unpack...
-```
-
-Re-install `bitsandbytes==0.31.8` or `bitsandbytes==0.31.5` as everything worked fine on our Docker image with those versions. In the worst case remove the [line that installs bitsandbytes on the Dockerfile](https://github.com/huggingface/transformers/blob/d6eeb871706db0d64ab9ffd79f9545d95286b536/docker/transformers-all-latest-gpu/Dockerfile#L49)
+If you see that the file is linked to the wrong CUDA version (here 10.2), find the correct location for `libcudart.so` (`find --name libcudart.so`) and replace the environment variable `LD_LIBRARY_PATH` with the one containing the correct `libcudart.so` file.