duplicated preprocessing plugin prior_flowClust

[kforner]

see

openCyto/R/pluginFramework.R

Line 13 in f3ffd89

.DEFAULT_PP <- c("prior_flowClust", "prior_flowClust", "warpSet", "standardize_flowset")

:

.DEFAULT_PP <- c("prior_flowClust", "prior_flowClust", "warpSet", "standardize_flowset")

[djhammill]

Thanks for reporting, this change will be made via #264.