Remove last references to Eclipse Neon

[ebousse]

Remove or replace the few remaining references to Eclipse Neon in the repository, which includes:

• some old CI files not used anymore
• old splash screen
• (most important) repositories available in the studio when installating plugins

Signed-off-by: Erwan Bousse erwan.bousse@tuwien.ac.at

[dvojtise]

Hi
about I was actually trying to see if using

(in the .product file) works better than using the .inf file (at least there's only one reference each time)
(I have a local branch with this in order to try if it works)

about timesquare update site, I'm not sure there is an oxygen repository yet

about old splash screens, I wish to keep them. Sometime, it helps me to easily retrieve an older version when I want to create the newest version. Splashscreen sources for each brand are in separate folder and do not harm. Additionally, I hope that in the future we will be able to able to build for multiple eclipse versions (for example when preparing a a release train)

[ebousse]

OK, you are right. I'll close this and let you make these changes yourself in a PR of your own then :).