mmc: sdhci-msm: Remove unneeded device tree entries

Remove unnecessary device tree properties from the code.

Change-Id: Id6f59c6874acda03c3f2aa93626eb20a9dc2ac00
Signed-off-by: Veerabhadrarao Badiganti <vbadigan@codeaurora.org>
Signed-off-by: Sarthak Garg <sartgarg@codeaurora.org>