Takashi Kajinami f7c40f7056 Remove support for plumgrid plugin
... which was deprecated in the previous cycle[1].

[1] 24a5a9aed9bb8dd57adae1ae9315c9fb85e0b6f3

Change-Id: I1f2f1a31ca0da0423f407d140aaaf95d9a9035b0
2021-01-11 23:40:46 +09:00
..
2021-01-11 23:40:46 +09:00