Remove unused parameters in VAACalcSad_lsx

Make its signature aligned with VAACalcSadFunc to resolve a
-Wlto-type-mismatch warning.

Signed-off-by: Xi Ruoyao <xry111@xry111.site>
diff --git a/codec/processing/src/loongarch/vaa_lsx.c b/codec/processing/src/loongarch/vaa_lsx.c
index 4ff896a..d4b2c61 100644
--- a/codec/processing/src/loongarch/vaa_lsx.c
+++ b/codec/processing/src/loongarch/vaa_lsx.c
@@ -45,8 +45,7 @@
 
 void VAACalcSad_lsx (const uint8_t* pCurData, const uint8_t* pRefData,
                      int32_t iPicWidth, int32_t iPicHeight, int32_t iPicStride,
-                     int32_t* pFrameSad, int32_t* pSad8x8, int32_t* pSd8x8,
-                     uint8_t* pMad8x8) {
+                     int32_t* pFrameSad, int32_t* pSad8x8) {
   const uint8_t* tmp_ref = pRefData;
   const uint8_t* tmp_cur = pCurData;
   int32_t iMbWidth = (iPicWidth >> 4);