move deletePlus to piamUtils package

[fbenke-pik]

No description provided.

[orichters]

We cannot just drop the export, given that those scripts (mostly from remindmodel) still rely on it:

• scripts/output/comparison/policyCosts.R
• scripts/output/single/reporting.R
• scripts/output/single/MAGICC7_AR6.R
• scripts/output/single/fixOnRef.R
• scripts/output/single/reportingREMIND2MAgPIE.R
• scripts/input/exoGAINSAirpollutants.R
• https://github.com/pik-piam/piamValidation/blob/main/R/importFunctions.R
• https://github.com/pik-piam/edgeTransport/blob/develop/inst/Rmd/compareScenarios_Transport/csEDGET_main.Rmd

So while I fear to annoy you with backwards compatibility issues, I think we should still make sure the latest remind release does not fail. It seems there is the option to simply reexport and imported function, and I think that is what we should do here: See this discussion and this example.

And of course one would need to adapt those packages.

[fbenke-pik]

I added reexport for backwards compatibility. Thanks for pointing out this option.

For adjustments in the packages you named:

• edgeTransport will be taken care of in this PR: Add integration with piamPlotComparison for compareScenarios edgeTransport#247
• For remindmodel, i will take care of it in a PR related to switching to piamPlotComparison for compareScenarios (it will be done next week at latest)