exynos4-common: remove the unsued CONFIG_CMD_PMIC

This config name was never used, because the present pmic command
was precompiled for the CONFIG_POWER.

Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com>
Acked-by: Simon Glass <sjg@chromium.org>

include/configs/exynos4-common.h

@@ -31,7 +31,6 @@
 #undef CONFIG_CMD_MTDPARTS
 #define CONFIG_CMD_DFU
 #define CONFIG_CMD_GPT
-#define CONFIG_CMD_PMIC
 #define CONFIG_CMD_SETEXPR
 
 /* USB Composite download gadget - g_dnl */