Deleting a single line from a data file?

I am currently adding and saving data to my data file:

Code:

readonly DynamicConfigFile dataFile = Interface.Oxide.DataFileSystem.GetFile( "Objects" );      
Dictionary<string, ulong> objects = new Dictionary<string, ulong>();objects = dataFile.ReadObject<Dictionary<string, ulong>>();objects[output] = player.userID;
dataFile.WriteObject( objects );

Is there any way for me to locate a specific line in the data file and then remove it and save the file again?

The file is full of objects/steamIDs, and I want the specific object/line to be removed in my file as a player removes it.

 

if (objects.ContainsKey("keyname")
objects.Remove("keyname")
Then resave

 

Oh, I didn't think about that, thanks!