arc: get rid of useless CONFIG_SKIP_LOWLEVEL_INIT

Currently there's nothing related to really low-level init on ARC so
CONFIG_SKIP_LOWLEVEL_INIT definition makes no sense.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
diff --git a/include/configs/arcangel4.h b/include/configs/arcangel4.h
index 60f3077..003a45d 100644
--- a/include/configs/arcangel4.h
+++ b/include/configs/arcangel4.h
@@ -15,8 +15,6 @@
 /*
  * Board configuration
  */
-#define CONFIG_SKIP_LOWLEVEL_INIT	/* U-Boot is in RAM already */
-
 #define CONFIG_ARCH_EARLY_INIT_R
 
 /*
diff --git a/include/configs/axs101.h b/include/configs/axs101.h
index 2340d99..4064ed2 100644
--- a/include/configs/axs101.h
+++ b/include/configs/axs101.h
@@ -15,8 +15,6 @@
 /*
  * Board configuration
  */
-#define CONFIG_SKIP_LOWLEVEL_INIT	/* U-Boot is in RAM already */
-
 #define CONFIG_ARCH_EARLY_INIT_R
 
 #define ARC_FPGA_PERIPHERAL_BASE	0xE0000000