spi: dt-bindings: snps,dw-apb-ssi: drop superfluous RZ/N1 entry

spi: dt-bindings: snps,dw-apb-ssi: drop superfluous RZ/N1 entry

Commit 164c05f03ffa ("spi: Convert DW SPI binding to DT schema") added
an RZ/N1 entry which was not in the original txt-file. It doesn't follow
the usual "<soc entry>, <soc family entry>" style for Renesas SoCs which
was properly added later with commit 029d32a892a8 ("spi: dw-apb-ssi:
Integrate Renesas RZ/N1 SPI controller"). In that commit, removing the
bogus entry was overlooked and is finally done now.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/20260626180326.9593-2-wsa+renesas@sang-engineering.com
Signed-off-by: Mark Brown <broonie@kernel.org>