Devrton: Remove all usage of and references to the obsolete package

[dd137]

As per title.

Note that I removed the following point from README -> desktopHCP -> Caveats:

if your run a production build of your desktop app it will not receive updates from project run
from meteor command unless you run it with --production - that is because development build
has devtron added and therefore the compatibilityVersion is different

The reason is that 1) the "issue" still seems to happen after removal of devrton (?) and 2) running meteor with --production doesn't work for me either, because changes in .desktop/ do not trigger a desktopHCP reload anyway. So it seems to me that this comment is outdated, but I may be wrong. Feel free to add a corrected text if applicable.

[StorytellerCZ]

LGTM just need to figure out if this should go into a patch release or at least a minor release. Given that we are removing something, according to semantic versioning we should have a major version bump, but I think we can get away with just a minor version bump. What do you think?

[StorytellerCZ]

As per #24 I'm merging this in for testing.