diff --git a/mercurial/debugcommands.py b/mercurial/debugcommands.py
--- a/mercurial/debugcommands.py
+++ b/mercurial/debugcommands.py
@@ -851,10 +851,6 @@ def debugdiscovery(ui, repo, remoteurl="
 
     ui.write(("common heads: %s\n") %
              " ".join(sorted(short(n) for n in common)))
-    if lheads <= common:
-        ui.write(("local is subset\n"))
-    elif rheads <= common:
-        ui.write(("remote is subset\n"))
 
 _chunksize = 4 << 10
 
diff --git a/tests/test-setdiscovery.t b/tests/test-setdiscovery.t
--- a/tests/test-setdiscovery.t
+++ b/tests/test-setdiscovery.t
@@ -57,7 +57,6 @@ Small superset:
     common:                      7
     missing:                     0
   common heads: 01241442b3c2 b5714e113bc0
-  local is subset
   
   % -- a -> b set
   comparing with b
@@ -78,7 +77,6 @@ Small superset:
     common:                      7
     missing:                     0
   common heads: 01241442b3c2 b5714e113bc0
-  local is subset
   
   % -- a -> b set (tip only)
   comparing with b
@@ -118,7 +116,6 @@ Small superset:
     common:                      7
     missing:                     8
   common heads: 01241442b3c2 b5714e113bc0
-  remote is subset
   
   % -- b -> a set
   comparing with a
@@ -139,7 +136,6 @@ Small superset:
     common:                      7
     missing:                     8
   common heads: 01241442b3c2 b5714e113bc0
-  remote is subset
   
   % -- b -> a set (tip only)
   comparing with a
@@ -160,7 +156,6 @@ Small superset:
     common:                      7
     missing:                     8
   common heads: 01241442b3c2 b5714e113bc0
-  remote is subset
 
 
 Many new: