[script][pad_commands] Remove traces of show-dev option

bob/pad/base/script/pad_commands.py

@@ -130,6 +130,7 @@ def det(ctx, scores, evaluation, **kargs):
 @common_options.eval_option()
 @common_options.n_bins_option()
 @common_options.criterion_option()
+@common_options.far_option()
 @common_options.thresholds_option()
 @common_options.const_layout_option()
 @common_options.print_filenames_option(dflt=False)
@@ -150,8 +151,7 @@ def hist(ctx, scores, evaluation, **kwargs):
 
   By default, when eval-scores are given, only eval-scores histograms are
   displayed with threshold line
-  computed from dev-scores. If you want to display dev-scores distributions
-  as well, use ``--show-dev`` option.
+  computed from dev-scores.
 
   Examples:
       $ bob pad hist -v dev-scores