Pulling the latest RMS with adjoint SA

[kspieks]

The current workflow for creating the t3_env on the abc_sa branch is to pull RMS from @mjohnson541 conda channel because at the time the original abc_sa PR was made, v0.3.0 was not merged into RMS master branch. From our discussion yesterday, we think that removing - mjohnson541 from environment.yml will pull the latest version of RMS, which would also mean we could remove lines 16-21 from devtools/install_pyrms.sh and also remove devtools/install_RMS_v030.jl. I'm documenting this here for future reference once we merge in the abc_sa branch.