bcma: remove unused function

Fix the following clang warning:

drivers/bcma/driver_mips.c:55:20: warning: unused function
'mips_write32' [-Wunused-function].
Reported-by: NAbaci Robot <abaci@linux.alibaba.com>
Signed-off-by: NJiapeng Chong <jiapeng.chong@linux.alibaba.com>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/1618382354-866-1-git-send-email-jiapeng.chong@linux.alibaba.com

drivers/bcma/driver_mips.c

@@ -52,13 +52,6 @@ static inline u32 mips_read32(struct bcma_drv_mips *mcore,
 	return bcma_read32(mcore->core, offset);
 }
 
-static inline void mips_write32(struct bcma_drv_mips *mcore,
-				u16 offset,
-				u32 value)
-{
-	bcma_write32(mcore->core, offset, value);
-}
-
 static u32 bcma_core_mips_irqflag(struct bcma_device *dev)
 {
 	u32 flag;