refactor：优化了like和unlike功能

internal/video/like_handler.go

@@ -89,21 +89,3 @@ func (lh *LikeHandler) IsLiked(c *gin.Context) {
 	}
 	c.JSON(200, gin.H{"is_liked": isLiked})
 }
-
-func (lh *LikeHandler) GetLikesCount(c *gin.Context) {
-	var req LikeRequest
-	if err := c.ShouldBindJSON(&req); err != nil {
-		c.JSON(400, gin.H{"error": err.Error()})
-		return
-	}
-	if req.VideoID <= 0 {
-		c.JSON(400, gin.H{"error": "video_id is required"})
-		return
-	}
-	likesCount, err := lh.service.GetLikesCount(c.Request.Context(), req.VideoID)
-	if err != nil {
-		c.JSON(500, gin.H{"error": err.Error()})
-		return
-	}
-	c.JSON(200, gin.H{"likes_count": likesCount})
-}