移除子项后，Swift / Firebase Tableview单元格不会刷新

I realize this is a bit of a mess but i'm learning how things work by piecing things together from tutorials and reference materials. My issue is when I remove a node from firebase, the tableview doesnt update. It's deleted from firebase but the cell remains in the tableview. Although not shown below, i've tried adding the mytableview.reload block of code every where I thought it should go, but I've had no success. Any input is appreciated.I realize this is a bit of a mess but i'm learn