Backport PR pandas-dev#57848 on branch 2.2.x (DOC: Remove duplicated Series.dt.normalize from docs) (pandas-dev#57854)

Backport PR pandas-dev#57848: DOC: Remove duplicated Series.dt.normalize from docs

Co-authored-by: Marc Garcia <garcia.marc@gmail.com>

Author: meeseeksmachine

doc/source/reference/series.rst

@@ -342,7 +342,6 @@ Datetime properties
    Series.dt.tz
    Series.dt.freq
    Series.dt.unit
-   Series.dt.normalize
 
 Datetime methods
 ^^^^^^^^^^^^^^^^