stm32mp1: configs: remove CONFIG_SYS_HZ

Use the default value from lib/Kconfig.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
diff --git a/include/configs/stm32mp1.h b/include/configs/stm32mp1.h
index 1bed570..033291e 100644
--- a/include/configs/stm32mp1.h
+++ b/include/configs/stm32mp1.h
@@ -10,11 +10,6 @@
 #include <linux/sizes.h>
 #include <asm/arch/stm32.h>
 
-/*
- * Number of clock ticks in 1 sec
- */
-#define CONFIG_SYS_HZ				1000
-
 #ifndef CONFIG_STM32MP1_TRUSTED
 /* PSCI support */
 #define CONFIG_ARMV7_PSCI_1_0