Remove "devel" R CMD CHECK workflow

[AlexAxthelm]

Given that this package doesn't have any dependencies on other RMI-PACTA repos (either as "hard" Imports, or "soft" Suggests), running R CMD CHECK with the dev versions of r2dii.match and .analysis doesn't make much sense, since there isn't anything called from those repos.

Can anyone think of a reason to keep this check in here? @RMI-PACTA/r-developers

Context: I'm planning to ensure checks against dev-versions of dependencies in .match (RMI-PACTA/r2dii.match#480) .analysis (RMI-PACTA/r2dii.analysis#501) and .plot (RMI-PACTA/r2dii.plot#567) which captures the "upstream" direction, but do we need to capture "downstream" for some reason (if we're not executing any of that code)

Relates to #386