Unused argument in `assemble_wt_graph()`

[rfriedman22]

When doing a devtools::install_github() on the latest version of develop I noticed the following two notes during installation:

Note: possible error in 'assemble_wt_graph(cds, ': unused argument (num_time_breaks = num_time_breaks)
Note: ... may be used in an incorrect context

The note about asemble_wt_graph() seems like an easy fix, but I'm not sure where the issue about ... is coming from.