Remove voice recorder on iPhone

You want to delete the Voice Memos app?

review this support article

How to delete apps on your iPhone, iPad, and iPod touch - Apple Support

• You can delete an app from your Home Screen by tap/hold on the app icon, when the menu pops up, select Remove App, then in the subsequent menu select Delete App
• You can delete an app from the App Library by locating the app and tap/hold, select Delete App.
• You can delete an app by navigating to Settings > General > iPhone Storage > [app name] scroll all the way down to the bottom and select Delete App.

If you are unable to delete apps with any of these methods, check:

Settings > Screen Time > Content & Privacy Restrictions > iTunes & App Store Purchases > Deleting Apps

make sure that's set to 'Allow'