Some coupler variable standard names could be simplified

[nusbaume]

Issue Type

Other (please describe below)

Issue Description

As mentioned in the CAM-SIMA PR #402 discussion here, it would likely be beneficial to change the standard names of the some of the coupler variables to be closer to the "base" name, and remove the from_coupler and to_coupler suffix, as they may not be providing any beneficial disambiguation (and may make the physics itself less clear).

Please note that these changes aren't required for any current or future CAM-SIMA physics configuration, but would be beneficial to do before any ESMStandardNames dictionary update, or before we push physics schemes over to the NCAR/ccpp-physics repo to be shared.

Will this change answers?

No

Will you be implementing this yourself?

Any Software Engineer can do this