DOC Remove incorrect line from dropna docs (pandas-dev#53876)

Update frame.py - remove incorrect line from dropna docs

Remove incorrect line "Pass tuple or list to drop on multiple axes. " from dropna, as the ability to drop on multiple axes has been depreciated.

Author: Pawel-Kranzberg

pandas/core/frame.py

@@ -6165,7 +6165,6 @@ def dropna(
             * 0, or 'index' : Drop rows which contain missing values.
             * 1, or 'columns' : Drop columns which contain missing value.
 
-            Pass tuple or list to drop on multiple axes.
             Only a single axis is allowed.
 
         how : {'any', 'all'}, default 'any'