Remove extract_text and extract_doc in favor of extract_sigle

Change-Id: I6577a8f453baab96e684da3b2238a31b4f0175e3
diff --git a/t/archive.t b/t/archive.t
index f86277f..71bedce 100644
--- a/t/archive.t
+++ b/t/archive.t
@@ -36,7 +36,7 @@
 
 {
   local $SIG{__WARN__} = sub {};
-  ok($archive->extract_text('./TEST/BSP/8', $dir), 'Wrong path');
+  ok($archive->extract_sigle(['TEST/BSP/8'], $dir), 'Wrong path');
 };
 
 ok(-d catdir($dir, 'TEST'), 'Test corpus directory exists');