boot/{uboot, ti-k3-r5-loader}: remove unneeded python-jsonschema dependency

Commits 8a4c3c91e7 ("boot/ti-k3-r5-loader: add BR2_TARGET_TI_K3_R5_LOADER_USE_BINMAN option")
and 1aec483412 ("boot/uboot: add BR2_TARGET_UBOOT_USE_BINMAN option")
added the python-jsonschema (target variant) dependency to the binman
option while only host-python-jsonschema is required.

http://lists.busybox.net/pipermail/buildroot/2024-April/689291.html

Reported-by: James Hilliard <james.hilliard1@gmail.com>
Signed-off-by: Romain Naour <romain.naour@smile.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

boot/ti-k3-r5-loader/Config.in

@@ -1,7 +1,6 @@
 config BR2_TARGET_TI_K3_R5_LOADER
 	bool "ti-k3-r5-loader"
 	depends on BR2_aarch64
-	depends on BR2_PACKAGE_HOST_RUSTC_TARGET_ARCH_SUPPORTS # python-rpds-py -> python-jsonschema
 	select BR2_TARGET_TI_K3_BOOT_FIRMWARE # binman
 	help
 	  Separate U-Boot SPL build for R5 core on TI's K3 processors.

boot/uboot/Config.in

@@ -273,7 +273,6 @@ config BR2_TARGET_UBOOT_NEEDS_ROCKCHIP_RKBIN
 
 config BR2_TARGET_UBOOT_USE_BINMAN
 	bool "U-Boot use binman"
-	depends on BR2_PACKAGE_HOST_RUSTC_TARGET_ARCH_SUPPORTS # python-rpds-py -> python-jsonschema
 	select BR2_TARGET_UBOOT_NEEDS_PYTHON3
 	select BR2_TARGET_UBOOT_NEEDS_PYELFTOOLS
 	select BR2_TARGET_UBOOT_NEEDS_PYLIBFDT