sunxi: remove frequency for NanoPi R1

The frequency appears as unlisted initial frequency.
Removed it as Hauke suggested.
Signed-off-by: NJan-Niklas Burfeind <git@aiyionpri.me>
(cherry picked from commit 5b82eeb3)

package/boot/uboot-sunxi/patches/252-sunxi-h3-add-support-for-nanopi-r1.patch

@@ -173,7 +173,7 @@ Signed-off-by: Jayantajit Gogoi <jayanta.gogoi525@gmail.com>
 +};
 --- /dev/null
 +++ b/configs/nanopi_r1_defconfig
-@@ -0,0 +1,22 @@
+@@ -0,0 +1,21 @@
 +CONFIG_ARM=y
 +CONFIG_ARCH_SUNXI=y
 +CONFIG_SPL=y
@@ -186,7 +186,6 @@ Signed-off-by: Jayantajit Gogoi <jayanta.gogoi525@gmail.com>
 +CONFIG_NR_DRAM_BANKS=1
 +# CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set
 +CONFIG_CONSOLE_MUX=y
-+CONFIG_SYS_CLK_FREQ=480000000
 +# CONFIG_CMD_FLASH is not set
 +# CONFIG_SPL_DOS_PARTITION is not set
 +# CONFIG_SPL_EFI_PARTITION is not set