Revert "add hologo.sty to support building vignette on Travis"

This reverts commit fe5f819aac5ce55e46390f6b6562840cb5df9b64.
attempt to install Oberdiek bundle directly from CTAN
need TDS version
Merge branch 'oberdiek'
Merge branch 'master' into 0.7-rc
Merge branch '0.7-rc' into 0.7-rc-full-test