From CMD you want to know what package to remove:
Mail and Calendar are called windows communication apps. The rest are easier to correlate.
C:\Program Files\WindowsApps>dir
Volume in drive C has no label.
Volume Serial Number is 5A4E-ED39
Directory of C:\Program Files\WindowsApps
...
12/31/2015 07:28 AM
12/31/2015 07:28 AM
...
0 File(s) 0 bytes
122 Dir(s) 50,681,364,480 bytes free
Get the names of the packages to remove
From powershell you remove it:
PS C:\WINDOWS\system32> Remove-AppxPackage microsoft.windowscommunicationsapps_17.6525.42271.0_x64__8wekyb3d8bbwe
PS C:\WINDOWS\system32> Remove-AppxPackage microsoft.windowscommunicationsapps_2015.6525.42271.0_neutral_~_8wekyb3d8bbwe