I would like to ask if there is a mod that removes historical events from Victoria? If not, what files should I alter to cleanly get rid of them?
Keep in mind that no historical events will strongly favour the status quo and help the great powers, especially France, UK, Austria and Russia. Germany and Italy will never unify. The US will get much less immigration (because of slavery parties). On the whole the game will be a lot less challenging (unless you play Prussia, the Italians or the USA).
To achieve the result, I guess you have to delete the country files in Victoria\db\events\, but I'm no modder so take this advice at your own risk. Always make a backup copy of your game files first.
Seeing Germany unify while 90% of it is conquered by France just because of the historical events is something I do not like to see.
Why wouldn't the Germans unite when faced with a powerful enemy that clearly intends to conquer them?