Integrate meta-guf-machine/remove-u-boot-patches

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Commit: https://git.seco.com/seco-ne/yocto/layers/meta-guf-machine/-/commit/5ff420af2ea5f30d67347190082c086177f406d3

u-boot-imx: Remove patches that are not used anymore

The patch code was integrated into u-boot, so the patches didn't
applied anymore.