Check_MK Werk 2198: windows_updates: Fix missing warning if reboot required in case forced reboot is in the past

ID: 2198 Title: windows_updates: Fix missing warning if reboot required in case forced reboot is in the past Component: Checks & Agents Level: 1 Class: Bug Fix Version: 1.2.7i1 If the plugin reports the next forced reboot to lie in the past then the check did not warn anymore about a neccessary reboot for applying the installed patches. Also the code was cleaned up on the dependency to the Python module <tt>datetime</tt> has been removed.