Removed redundant --extended-insert flag

Author: vjku

src/restic_compose_backup/containers_db.py

@@ -51,7 +51,6 @@ def dump_command(self) -> list:
             "--single-transaction",
             "--order-by-primary",
             "--compact",
-            "--extended-insert",
             "--force"
         ]
 
@@ -122,7 +121,6 @@ def dump_command(self) -> list:
             "--single-transaction",
             "--order-by-primary",
             "--compact",
-            "--extended-insert",
             "--force"
         ]