Revert "mmc: renesas_sdhi: workaround a regression when reinserting SD cards"

Revert "mmc: renesas_sdhi: workaround a regression when reinserting SD cards"

This reverts commit be0b7ac1227f6f2aad50079119b8298ee4f9dbba. It was
only a workaround to hide a regression. We now have proper fixes.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/20201106072549.1495-4-wsa+renesas@sang-engineering.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>