bundle2: stop capturing output for ssh again

This backout 36111f98f23d since we can have real time output with ssh
again. The tests change is not backed-out because it was a test output
fix.

mercurial/exchange.py

@@ -1358,7 +1358,7 def unbundle(repo, cg, heads, source, ur
     # quick fix for output mismatch with bundle2 in 3.4
     captureoutput = repo.ui.configbool('experimental', 'bundle2-output-capture',
                                        False)
-    if url.startswith('remote:'):
+    if url.startswith('remote:http:') or url.startswith('remote:https:'):
         captureoutput = True
     try:
         check_heads(repo, heads, 'uploading changes')

tests/test-bundle2-pushback.t

@@ -63,11 +63,11 Without config
   $ hg push
   pushing to ssh://user@dummy/server
   searching for changes
-  remote: pushback not enabled
   remote: adding changesets
   remote: adding manifests
   remote: adding file changes
   remote: added 1 changesets with 1 changes to 1 files
+  remote: pushback not enabled
   $ hg bookmark
   no bookmarks set