Here is the Command to Delete the built-in app of the Windows 10
Press Windows Key + Letter X
Choose for "Command Prompt (Admin)"
Type in Powershell
Hit enter
Then Type this commands :
3D Builder :
Get-AppxPackage *3dbuilder* | Remove-AppxPackage
Alarms & Clocks :
Get-AppxPackage *windowsalarms* | Remove-AppxPackage
Calculator :
Get-AppxPackage *windowscalculator* | Remove-AppxPackage
Camera :
Get-AppxPackage *windowscamera* | Remove-AppxPackage
Groove Music :
Get-AppxPackage *zunemusic* | Remove-AppxPackage
Mail & Calendar :
Get-AppxPackage *windowscommunicationsapps* | Remove-AppxPackage
Maps :
Get-AppxPackage *windowsmaps* | Remove-AppxPackage
Movies & Tv :
Get-AppxPackage *zunevideo* | Remove-AppxPackage
OneNote :
Get-AppxPackage *onenote* | Remove-AppxPackage
People :
Get-AppxPackage *people* | Remove-AppxPackage
Photos :
Get-AppxPackage *photos* | Remove-AppxPackage
Voice Recorder :
Get-AppxPackage *windowssoundrecorder* | Remove-AppxPackage
Xbox :
Get-AppxPackage *xboxapp* | Remove-AppxPackage
Get Office :
Get-AppxPackage *officehub* | Remove-AppxPackage
Skype :
Get-AppxPackage *skypeapp* | Remove-AppxPackage
Get Started :
Get-AppxPackage *getstarted* | Remove-AppxPackage
Solitaire Collections :
Get-AppxPackage *solitairecollections* | Remove-AppxPackage
Finance :
Get-AppxPackage *bingfinance* | Remove-AppxPackage
News :
Get-AppxPackage *bingnews* | Remove-AppxPackage
Windows Phone ( Continuum ) :
Get-AppxPackage *windowsphone* | Remove-AppxPackage
Sports :
Get-AppxPackage *bingsports* | Remove-AppxPackage
Weather :
Get-AppxPackage *bingweather* | Remove-AppxPackage
Windows Store :
Get-AppxPackage *windowsstore* | Remove-AppxPackage
And If you want to bring them all back, here is the command :
Get-AppxPackage -Allusers | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation) \AppxManifest.xml"
Note : For any scenario, do this at your own risk!, I am not liable for what will happen on your device.