mmc: fsl_esdhc_imx: drop redundant code for non-removable feature

[ fsl_esdhc commit commit 08197cb8 ]

Drop redundant code for non-removable feature. "non-removable" property
has been read in mmc_of_parse().

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
[ set MMC_CAP_NONREMOVABLE in plat->cfg.host_caps ]
Signed-off-by: Sean Anderson <sean.anderson@seco.com>