There is a conditional tag is_admin()
which checks are you in the Administration Panel or Frontend. So,
if( !is_admin() ) {
wp_enqueue_style(
'css-minified',
get_stylesheet_directory_uri() . DIRECTORY_SEPARATOR . 'style.css',
[],
null,
'all'
);
wp_enqueue_style(
'font-awesome',
'https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css',
[],
null,
'all'
);
}
See is_admin().