DOC: Remove Series.sortlevel from api.rst (#23395)

gfyoung · jreback · commit 1b25bcf22b99 · 2018-10-28T09:34:44.000-04:00
Was dropped in gh-15099 but accidentally added back in gh-18202. Follow-up to gh-23375.
diff --git a/doc/source/api.rst b/doc/source/api.rst
@@ -515,7 +515,6 @@ Reshaping, sorting
    Series.repeat
    Series.squeeze
    Series.view
-   Series.sortlevel
 
 
 Combining / joining / merging
