ARM: dts: renesas: Remove unused LBSC nodes from board DTS

ARM: dts: renesas: Remove unused LBSC nodes from board DTS

Several board DTS files contain minimal device nodes that represent
on-SoC Local Bus State Controllers (LBSC), although they belong in the
SoC-specific DTS files instead.  As these device nodes are incomplete
and unused, and hamper adding proper nodes later, it is better to just
remove them.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/76ece7602045670cbb8dff684c3366ba6eb89add.1693481518.git.geert+renesas@glider.be