Backport PR #42318: PERF/REGR: symmetric_difference revert most of #41833#42324

Merged

simonjayhawkins merged 3 commits intopandas-dev:1.3.xfrom simonjayhawkins:backport-of-pr-42318-on-1.3.x

Jun 30, 2021

+58-18

Commits on Jun 30, 2021

Backport PR pandas-dev#42318 : PERF/REGR: symmetric_difference revert most of pandas-dev#41833

jbrockmendel
authored and
simonjayhawkins
committed
remove if self._is_multi block
simonjayhawkins
committed
remove MultiIndex symmetric_difference
simonjayhawkins
committed