1. List all simulators

Find out all simulators

xcrun simctl list


Find out active simulator

xcrun simctl list | grep Booted

You will get the result like:

$ xcrun simctl list |grep Booted
iPhone 11 (AE8852AB-378E-47FB-BD23-4CF77BFBC6DC) (Booted)

Now you can erase the simulator by

xcrun simctl erase AE8852AB-378E-47FB-BD23-4CF77BFBC6DC

2. Delete the app from active simulator

xcrun simctl uninstall booted your.bundle.id

Or

xcrun simctl uninstall AE8852AB-378E-47FB-BD23-4CF77BFBC6DC your.bundle.id

reference:

https://medium.com/xcblog/simctl-control-ios-simulators-from-command-line-78b9006a20dc