fix import bug

app.py

@@ -7,7 +7,6 @@ from lineless_table_rec import LinelessTableRecognition
 from paddleocr import PPStructure
 from rapid_table import RapidTable
 from rapidocr_onnxruntime import RapidOCR
-from slanet_plus_table import SLANetPlus
 from table_cls import TableCls
 from wired_table_rec import WiredTableRecognition