Revert "fxblox-rk1: add missing patch for latest radxa uboot"

[amazingfate]

This reverts commit 6ecc0b7.

Description

This patch is merged upstream, so revert the commit.

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Please also note any relevant details for your test configuration.

• ./compile.sh uboot BOARD=fxblox-rk1 BRANCH=vendor

Checklist:

Please delete options that are not relevant.

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• My changes generate no new warnings
• Any dependent changes have been merged and published in downstream modules