Delete duplicate get_id_from_doc_name function

@@ -508,7 +508,7 @@ Resource           resource.robot
 
 Додати документацію до зміни договору
   ${file_path}  ${file_name}  ${file_content}=  create_fake_doc
-  ${doc_id}=  get_id_from_doc_name  ${file_name}
+  ${doc_id}=  get_id_from_string  ${file_name}
   ${doc}=  Create Dictionary
   ...      id=${doc_id}
   ...      name=${file_name}
@@ -520,7 +520,7 @@ Resource           resource.robot
 
 Додати документацію до договору
   ${file_path}  ${file_name}  ${file_content}=  create_fake_doc
-  ${doc_id}=  get_id_from_doc_name  ${file_name}
+  ${doc_id}=  get_id_from_string  ${file_name}
   ${doc}=  Create Dictionary
   ...      id=${doc_id}
   ...      name=${file_name}

@@ -478,10 +478,6 @@ def get_object_index_by_id(data, object_id):
     return index
 
 
-def get_id_from_doc_name(name):
-    return re.match(r'd\-[0-9a-fA-F]{8}', name).group(0)
-
-
 def get_object_by_id(data, given_object_id, slice_element, object_id):
     """
         data: object to slice