dt-bindings: nvmem: mediatek: remove duplicate mt8192 line

The same patch was accidentally merged twice, resulting in a
duplicate line for the mt8192 SoC.

Fixes: f2674c0c ("dt-bindings: nvmem: mediatek: add support for MediaTek mt8192 SoC")
Fixes: 2a1405a1 ("dt-bindings: nvmem: mediatek: add support for MediaTek mt8192 SoC")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Documentation/devicetree/bindings/nvmem/mtk-efuse.txt

@@ -9,7 +9,6 @@ Required properties:
 	      "mediatek,mt8173-efuse" or "mediatek,efuse": for MT8173
 	      "mediatek,mt8192-efuse", "mediatek,efuse": for MT8192
 	      "mediatek,mt8516-efuse", "mediatek,efuse": for MT8516
-	      "mediatek,mt8192-efuse", "mediatek,efuse": for MT8192
 - reg: Should contain registers location and length
 
 = Data cells =