Remove unused imports.

borgmatic/commands/convert_config.py

@@ -7,7 +7,6 @@ import textwrap
 
 from ruamel import yaml
 
-from borgmatic import borg
 from borgmatic.config import convert, generate, legacy, validate
 
 

borgmatic/commands/generate_config.py

@@ -4,9 +4,6 @@ import os
 from subprocess import CalledProcessError
 import sys
 
-from ruamel import yaml
-
-from borgmatic import borg
 from borgmatic.config import convert, generate, validate