Before I decided to update my Minecraft world to 1.21. I wanted to Trim some chunks so it can be updated to 1.21 to get Trail Chamber. I also decided to delete some old texture packs inside of my world since some of them were outdated. The texture pack was kinda deleted but it's not deleted in a way where it's fully gone. When you look at the texture file it says "This pack is missing" and it kinda bothers me because it's taking space for no reason to look at when you're playing your Minecraft world and switching texture packs. Are there any solutions or bug fixes for this?

Thank you

Note I play the bedrock edition on Mobile On Samsung Galaxy S22 where the Android and Minecraft folders are inaccessible. The chunk trimming happens on PC windows because I have to import the world from my phone to my PC through a USB Cable.