Remove inline from khash_python
@DeaMariaLeon noted that #57575 caused a slight regression in the benchmarks. This is the only thing from that PR that could reasonably affect performance in any way
can you link a benchmark? I don't have the direct link but this is what conbench showed

![image](https://github.com/pandas-dev/pandas/assets/609873/5859a442-f3d7-4c72-8b59-570f3e68b590)
 thx Nice! @WillAyd 
![Screenshot 2024-02-26 at 16 58 43](https://github.com/pandas-dev/pandas/assets/11835246/b6dad7da-eb0a-4c68-8cf1-1816435b5173)
