configs: am62x_evm_a53: remove bootcmd from defconfig
After commit to enable HS mode android boot was broken. So remove bootcmd from defconfig to use distrocmd from config file
Fixes: 767a83a9 ("configs: am62x: Enable config option for am62x HS EVM") Signed-off-by: Guillaume La Roque glaroque@baylibre.com