Uninstall Skype for Business

Use this step to unisntall a standalone installation of Skype for Business


Create a task sequence with these two command line steps

Uninstall:
"C:\Program Files (x86)\Common Files\Microsoft Shared\OFFICE15\Oarpmany.exe" /removereleaseinpatch "{90150000-0011-0000-1000-0000000FF1CE}" "{BF1B3F01-93F3-4B83-93DB-132EB1AED259}" "1033" "0"

Disable Skype UI:
REG ADD HKCU\Software\Microsoft\Office\Lync /v EnableSkypeUI /t REG_Binary /d 00000000 /f