Revert "Allow interface types to override glean adjacency behaivour"

This reverts commit 8b30e471df4d42214619e1d6c50cc8298426b45f.

Change-Id: I99edb236eb0a7f8ba3fba333c3481a710ebcb59c
Signed-off-by: Ole Troan <ot@cisco.com>
diff --git a/test/test_bier.py b/test/test_bier.py
index ae7b46a..a70dd09 100644
--- a/test/test_bier.py
+++ b/test/test_bier.py
@@ -195,7 +195,7 @@
         self.bier_midpoint(BIERLength.BIER_LEN_128, 16, 128)
 
     def test_bier_midpoint_64(self):
-        """BIER midpoint BSL:64"""
+        """BIER midpoint BSL:256"""
         self.bier_midpoint(BIERLength.BIER_LEN_64, 8, 64)
 
     def test_bier_head(self):