rm unused function expand_rownames

Author: jamesdunham

DESCRIPTION

@@ -43,7 +43,6 @@ Collate:
     'class-dgmrp_fit.r'
     'dgirt.r'
     'dichotomize_item_responses.r'
-    'expand_rownames.r'
     'methods-control.r'
     'methods-dgirtfit-plot.r'
     'methods-dgirtfit-poststratify.r'

NAMESPACE

@@ -3,7 +3,6 @@
 S3method(as.data.frame,dgo_fit)
 export(dgirt)
 export(dgmrp)
-export(expand_rownames)
 export(plot_rhats)
 export(shape)
 export(summarize)