As much as I want to I do not want to manually uninstall on 70 workstations
If the above is correct, it seems like the underlying installer is an msi. You might want to search HKLM\Software\Microsoft\Windows\CurrentVersion\Uninstall for the UninstallString for this product.
setup.exe" /X /L1033 /V"INSTALLLEVEL=0
INSTALLDIR=\"C:\Program Files\Cognos\" ADDLOCAL=Architect,Perspectives
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