If you decide a journalist who is currently on your media list should be removed, you can do so from the Media List or from the journalist's profile page.
From a Media list:
Step 1: Navigate to the Media Lists page
Step 2: Select the Media List you’re removing a journalist from
Step 3: Check the box next to each journalist's name and select Remove
Step 4: Click Confirm
From a profile page:
Step 1: Navigate to a person’s profile by clicking their name.
Step 2: Locate the Media List section on the right side of the journalist’s profile
Step 3: Deselect the Media List you’d like to remove the journalist from
The checkbox next to the Media List will be unchecked and the journalist will no longer appear on the Media List.