Revert "Inconsistent indexes for tick label plotting (#28733)"
This reverts commit fb379d8266492f917ed880f7619f3d0d9bc7c8db.

reverts #28733

cc @nrebena @jreback @WillAyd @charlesdong1991

just the complete revert for now for ci testing, will add commits for release notes. will NOT add regression tests see https://github.com/pandas-dev/pandas/issues/38721#issuecomment-761840221