configs/apf9328: don't use sstrip

There is no reason in a defconfig to select sstrip specifically, so
let's get rid of it.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

configs/armadeus_apf9328_defconfig

@@ -3,7 +3,6 @@ BR2_arm=y
 BR2_arm920t=y
 
 # Toolchain
-BR2_STRIP_sstrip=y
 BR2_GCC_VERSION_4_4_X=y
 BR2_PACKAGE_GDB=y
 BR2_PACKAGE_HOST_GDB=y