Remove unused imports

Signed-off-by: Philippe Ombredanne <pombredanne@nexb.com>

Author: pombredanne

src/extractcode/archive.py

@@ -26,7 +26,6 @@
 from commoncode import filetype
 from commoncode import functional
 from commoncode.ignore import is_ignored
-from commoncode.system import on_linux
 
 from typecode import contenttype
 

src/extractcode/sevenzip.py

@@ -34,7 +34,6 @@
 from commoncode.system import on_mac
 from commoncode.system import on_macos_14_or_higher
 from commoncode.system import on_windows
-from commoncode import text
 
 import extractcode
 from extractcode import ExtractErrorFailedToExtract