+ Removes jsonnet, graphql, dhall & protobuf packages from the module.
+ Removes +data-vagrant-mode project minor mode (unused).
I'm phasing out the lang/data module. Its original purpose was to be for
data interchange formats, like JSON, but over time it became the dumping
ground for languages with no clear defining feature.
These packages are being removed first because their configs are
non-existent or so trivial that it offers nothing a user couldn't set up
themselves.
graphql and jsonnet might get heir own modules (or jsonnet might be
gated behind a flag in the :lang json module), but for now they gotta
go.
fixup! Remove jsonnet, graphql, dhall & protobuf modes from lang/data
e24b8cd1d1