The collinearity is not referenced when adding it to `ignore` variables, just listed as NULL

[Cathy Tomson]

https://github.com/Microsoft/acceleratoRs/blob/5db688ab0fab6a79bd4b38b613220ffadc8af8f1/CreditRiskPrediction/Code/CreditRiskPrediction.Rmd#L621

[Cathy Tomson]

Here is a bit of code to add one of the highly correlated variables to the list to be ignored.

corvariables <- mc %>%
  filter(cor > 0.9) %>%
  select(var1) %>%
  pull() %T>% print()

ignore <- union(ignore, corvariables) %>% print()