Delete DB.py

DB.py

@@ -1,10 +0,0 @@
-DB_type = "plaintext"  # "plaintext" or future backends
-
-if DB_type == "plaintext":
-    from database import Database
-elif DB_type == "mondoDB":  # legacy placeholder; not implemented
-    from database import Database
-else:
-    import sys
-    print('Unsupported database type "%s"' % DB_type)
-    sys.exit(1)