uboot-rockchip: remove prebuilt of-platdata

[1715173329]

With this change you need have swig and libpython3-dev installed on
your host, which should be done already.

[QYKing233]

With this change you need have swig and libpython3-dev installed on your host, which should be done already
请问ubuntu上已经执行sudo apt install swig && sudo apt install libpython3-dev，但是编译orange-pi-r1-plus-lts还是失败。
CC tpl/drivers/ram/rockchip/sdram_rk3328.o
drivers/ram/rockchip/sdram_rk3328.c: In function 'rk3328_dmc_init':
drivers/ram/rockchip/sdram_rk3328.c:525:55: error: 'struct dtd_rockchip_rk3328_dmc' has no member named 'rockchip_sdram_params'
525 | (void *)dtplat->rockchip_sdram_params;
| ^~
make[8]: *** [scripts/Makefile.build:258: tpl/drivers/ram/rockchip/sdram_rk3328.o] Error 1
make[7]: *** [scripts/Makefile.build:398: tpl/drivers/ram/rockchip] Error 2
make[6]: *** [scripts/Makefile.build:398: tpl/drivers/ram] Error 2
make[5]: *** [scripts/Makefile.spl:531: tpl/drivers] Error 2
make[4]: *** [Makefile:2109: tpl/u-boot-tpl] Error 2
make[4]: Leaving directory '/home/ilya/lede/build_dir/target-aarch64_generic_musl/u-boot-orangepi-r1-plus-lts-rk3328/u-boot-2022.07'
make[3]: *** [Makefile:247: /home/ilya/lede/build_dir/target-aarch64_generic_musl/u-boot-orangepi-r1-plus-lts-rk3328/u-boot-2022.07/.built] Error 2
make[3]: Leaving directory '/home/ilya/lede/package/boot/uboot-rockchip'
time: package/boot/uboot-rockchip/orangepi-r1-plus-lts-rk3328/compile#65.03#5.97#68.44
ERROR: package/boot/uboot-rockchip failed to build (build variant: orangepi-r1-plus-lts-rk3328).
make[2]: *** [package/Makefile:116: package/boot/uboot-rockchip/compile] Error 1
make[2]: Leaving directory '/home/ilya/lede'
make[1]: *** [package/Makefile:110: /home/ilya/lede/staging_dir/target-aarch64_generic_musl/stamp/.package_compile] Error 2
make[1]: Leaving directory '/home/ilya/lede'
make: *** [/home/ilya/lede/include/toplevel.mk:230: world] Error 2