Check_MK Werk 6934: cmk-update-agent: Remove unnecessary check for python interpreter

ID: 6934 Title: cmk-update-agent: Remove unnecessary check for python interpreter Component: agents Level: 1 Class: Bug fix Version: 1.6.0i1 Since Check_MK 1.5, the Agent Updater gets deployed as a binary file to linux systems by default. Hence it is no longer necessary to check for an available python2 interpreter on agent installation unless the Agent Updater gets deployed as a script. This werk adapts the agent's preinstall scripts so that no unnecessary checks are induced anymore.