Removal of repetitions

[furgon777]

Good afternoon, dear friends, I encountered such a problem: when mass comparing 2 folders with txt files, there are always differences on both sides. How do I bulk remove all differences between 2 files (I mean not move differences from one file to another, namely remove differences from file A and B)
For example as below.

[sdottaka]

It is possible to remove differences from both files as follows.

Unfortunately, there is no way to do this automatically for large numbers of files.