CLN: Remove io.data and io.wb (#18612)

Deprecated in 0.17.0.

xref gh-13735.

Author: gfyoung

doc/source/index.rst.template

@@ -137,7 +137,6 @@ See the package overview for more detail about what's in the library.
     visualization
     style
     io
-    remote_data
     enhancingperf
     sparse
     gotchas

doc/source/remote_data.rst

@@ -148,6 +148,7 @@ Removal of prior version deprecations/changes
 - ``pd.tseries.util.isleapyear`` has been removed (deprecated since v0.19). Use ``.is_leap_year`` property in Datetime-likes instead (:issue:`18370`)
 - ``pd.ordered_merge`` has been removed (deprecated since v0.19). Use ``pd.merge_ordered`` instead (:issue:`18459`)
 - The ``SparseList`` class has been removed (:issue:`14007`)
+- The ``pandas.io.wb`` and ``pandas.io.data`` stub modules have been removed (:issue:`13735`)
 
 .. _whatsnew_0220.performance: