ARM: multi_v7_defconfig: Drop duplicate CONFIG_TI_PRUSS=m

Commit ee1ab82 ("ARM: defconfig: move entries") added a duplicate
instance of CONFIG_TI_PRUSS=m, causing a Kconfig warning:

  arch/arm/configs/multi_v7_defconfig:1152:warning: override: reassigning to symbol TI_PRUSS

Drop the first instance, as the second instance added by the
aforementioned change is where savedefconfig puts it.

Fixes: ee1ab82 ("ARM: defconfig: move entries")
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Link: https://patch.msgid.link/20260305-arm-defconfig-drop-duplicate-ti-pruss-v1-1-2839e3b42a8b@kernel.org
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

Author: nathanchance

arch/arm/configs/multi_v7_defconfig

@@ -279,7 +279,6 @@ CONFIG_TI_CPSW_SWITCHDEV=y
 CONFIG_TI_CPTS=y
 CONFIG_TI_KEYSTONE_NETCP=y
 CONFIG_TI_KEYSTONE_NETCP_ETHSS=y
-CONFIG_TI_PRUSS=m
 CONFIG_TI_PRUETH=m
 CONFIG_XILINX_EMACLITE=y
 CONFIG_SFP=m