ARM: s3c: Remove unused s3c_init_uart_irqs() declaration

The s3c_init_uart_irqs() has not been used since
commit 2a8d7bd ("ARM: SAMSUNG: Remove uart irq handling from
plaform code"), so remove it.

Signed-off-by: Gaosheng Cui <cuigaosheng1@huawei.com>
Link: https://lore.kernel.org/r/20240813105037.1178393-1-cuigaosheng1@huawei.com
Fixes: 2a8d7bd ("ARM: SAMSUNG: Remove uart irq handling from plaform code")
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Author: gscui

arch/arm/mach-s3c/irq-uart-s3c64xx.h

@@ -12,5 +12,3 @@ struct s3c_uart_irq {
 	unsigned int	 parent_irq;
 };
 
-extern void s3c_init_uart_irqs(struct s3c_uart_irq *irq, unsigned int nr_irqs);
-