mmc: sdhci-acpi: Remove MMC_CAP_BUS_WIDTH_TEST for Intel controllers

[ Upstream commit 265984b36ce82fec67957d452dd2b22e010611e4 ]

The CMD19/CMD14 bus width test has been found to be unreliable in
some cases.  It is not essential, so simply remove it.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>