BuddyPress.org

You should remove that code as soon the field is created.
If you edit the field name, then a new field will be created – if you don’t remove the code.

They dont have a delete button and now I cannot remove any of the fields.

That is because 'can_delete' => false, should be 'can_delete' => true,.
I have corrected the gist.

To delete the fields you already have, you can use a database tool like phpmyadmin.
You need to find the row(s) in the bp_xprofile_fields table and for each row, change the can_delete field value to 1. Then a ‘Delete’ will appear for that field in wp-admin.

Don’t replace the code.

Use this function, and change ‘Country’ to the name you gave the field.

function naisai_make_field_delete() {
	global $wpdb;
	
	$table = $wpdb->prefix . "bp_xprofile_fields"; 
	$wpdb->query( "UPDATE $table SET can_delete = 1 WHERE name = 'Country'" );
	
}
add_action( 'bp_ready', 'naisai_make_field_delete' );

Then visit your site’s home page.
Then go to that field in wp-admin and you should see a Delete link.
If you have more than one field you want to Delete, then change the name in the function and repeat the process.
When you are done – remove the function.

Then, if you want, get the code from the gist and run again.

You can’t find the word Country in the function called ‘naisai_make_field_delete’ ???

Can you find this WHERE name = in that function?