configs: j721s2_evm_a72_defconfig: fix the bootcmd

Remove the main_cpsw0_qsgmii_phyinit variable from the boot
command as there is no ethernet firmware in j721s2.

Fixes: 8886341aa670 ('configs: j721s2_evm_a72_defconfig: Add A72 specific defconfig')
Signed-off-by: Jayesh Choudhary <j-choudhary@ti.com>
diff --git a/configs/j721s2_evm_a72_defconfig b/configs/j721s2_evm_a72_defconfig
index 671fce6..a06312f 100644
--- a/configs/j721s2_evm_a72_defconfig
+++ b/configs/j721s2_evm_a72_defconfig
@@ -32,7 +32,7 @@
 CONFIG_SPL_LOAD_FIT_ADDRESS=0x81000000
 # CONFIG_USE_SPL_FIT_GENERATOR is not set
 CONFIG_OF_BOARD_SETUP=y
-CONFIG_BOOTCOMMAND="run findfdt; run envboot; run init_${boot}; run main_cpsw0_qsgmii_phyinit; run boot_rprocs; run get_kern_${boot}; run get_fdt_${boot}; run get_overlay_${boot}; run run_kern"
+CONFIG_BOOTCOMMAND="run findfdt; run envboot; run init_${boot}; run boot_rprocs; run get_kern_${boot}; run get_fdt_${boot}; run get_overlay_${boot}; run run_kern"
 CONFIG_LOGLEVEL=7
 CONFIG_SPL_MAX_SIZE=0xc0000
 CONFIG_SPL_HAS_BSS_LINKER_SECTION=y