Remove exception in migration

Some users moved their data folder despite the code not permitting it yet.
This migration will fail for those users, but they will still be able to run
the app.

Author: cpacia

db/migrations/migration2.py

@@ -13,12 +13,10 @@ def migrate(database_path):
     mappings = cursor.fetchall()
 
     for mapping in mappings:
-        if DATA_FOLDER not in mapping[1]:
-            raise Exception("To complete migration 2 please run openbazaard at least once using the original "
-                            "data folder location before moving it to a different location.")
-        path = mapping[1][len(DATA_FOLDER):]
-        cursor.execute('''INSERT OR REPLACE INTO hashmap(hash, filepath)
-                          VALUES (?,?)''', (mapping[0], path))
+        if DATA_FOLDER in mapping[1]:
+            path = mapping[1][len(DATA_FOLDER):]
+            cursor.execute('''INSERT OR REPLACE INTO hashmap(hash, filepath)
+                              VALUES (?,?)''', (mapping[0], path))
 
     # update version
     cursor.execute('''PRAGMA user_version = 2''')