Remove deprecated Chocolatey shims (chocolatey, cinst, clist, cpush, cuninst, cup)

[gep13]

In v1.0.0 we marked the Chocolatey shims as deprecated

• chocolatey
• cinst
• clist
• cpush
• cuninst
• cup

These now need to be removed completely.

Usage of these shims should be removed from the help documentation, and the genaratedocs.ps1 file should be updated to remove the explicit warnings about their removal in 2.0.0.

This is a follow up issue from this one in the 1.0.0 milestone: #2641

[gep13]

@vexx32 I have a branch in the making that has these changes on it.