.gitignore cleanup (removed double entries which are listed in cpp/ as well as cpp/pipelines)
.gitignore cleanup (removed double entries which are listed in cpp/ as well as cpp/pipelines)

ubtue/ub_tools,ubtue/ub_tools,ubtue/ub_tools,ubtue/ub_tools,ubtue/ub_tools,ubtue/ub_tools,ubtue/ub_tools,ubtue/ub_tools