Revert "Merge branch 'IT19070704' into 'master'"

This reverts merge request !114

backend/.idea/backend.iml

@@ -2,6 +2,7 @@
 <module type="PYTHON_MODULE" version="4">
   <component name="NewModuleRootManager">
     <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$" isTestSource="false" />
       <sourceFolder url="file://$MODULE_DIR$/backend" isTestSource="false" />
     </content>
     <orderEntry type="inheritedJdk" />

backend/backend/services/class_diagram_class_detection_service.py

@@ -5,6 +5,7 @@ import pytesseract as ts
 from PIL import Image
 from models.attribute_model import Attribute
 from object_detection.utils import label_map_util
+import matplotlib.pyplot as plt
 import app
 import tensorflow as tf
 import spacy