Added file removal when substituting datasheet

server.py

@@ -1,5 +1,6 @@
-import json
+import os
 import re
+import json
 import sqlalchemy
 from sqlalchemy.sql import select
 from sqlalchemy.sql import text
@@ -97,7 +98,7 @@ def alter(partID):
             datasheet_file = request.files['datasheet-file']
             datasheet_filename = secure_filename(datasheet_file.filename)
             datasheet_file.save('/srv/datasheets/' + datasheet_filename)
-            # TODO: Remove old datasheet
+            os.remove('/srv/datasheets/' + l[0]['datasheet'])
         else:
             datasheet_filename = l[0]['datasheet']
         s += 'where id=:id;'