tests: remove bookmark extension configuration

tests/test-bookmarks-current.t

@@ -1,8 +1,3 b''
-  $ echo "[extensions]" >> $HGRCPATH
-  $ echo "bookmarks=" >> $HGRCPATH
-
-  $ echo "[bookmarks]" >> $HGRCPATH
-
   $ hg init
 
 no bookmarks

tests/test-bookmarks-pushpull.t

@@ -1,6 +1,3 b''
-  $ echo "[extensions]" >> $HGRCPATH
-  $ echo "bookmarks=" >> $HGRCPATH
-
 initialize
 
   $ hg init a

tests/test-bookmarks-rebase.t

@@ -1,6 +1,5 b''
   $ echo "[extensions]" >> $HGRCPATH
   $ echo "rebase=" >> $HGRCPATH
-  $ echo "bookmarks=" >> $HGRCPATH
 
 initialize repository
 

tests/test-bookmarks-strip.t

@@ -1,5 +1,4 b''
   $ echo "[extensions]" >> $HGRCPATH
-  $ echo "bookmarks=" >> $HGRCPATH
   $ echo "mq=" >> $HGRCPATH
 
   $ hg init

tests/test-bookmarks.t

@@ -1,6 +1,3 b''
-  $ echo "[extensions]" >> $HGRCPATH
-  $ echo "bookmarks=" >> $HGRCPATH
-
   $ hg init
 
 no bookmarks

tests/test-ssh.t

@@ -40,9 +40,6 b" creating 'remote"
   > [server]
   > uncompressed = True
   > 
-  > [extensions]
-  > bookmarks =
-  > 
   > [hooks]
   > changegroup = python "$TESTDIR"/printenv.py changegroup-in-remote 0 ../dummylog
   > EOF
@@ -121,8 +118,6 b' updating rc'
   $ echo "default-push = ssh://user@dummy/remote" >> .hg/hgrc
   $ echo "[ui]" >> .hg/hgrc
   $ echo "ssh = python ../dummyssh" >> .hg/hgrc
-  $ echo '[extensions]' >> .hg/hgrc
-  $ echo 'bookmarks =' >> .hg/hgrc
 
 find outgoing
 
@@ -195,8 +190,6 b' check remote tip'
 test pushkeys and bookmarks
 
   $ cd ../local
-  $ echo '[extensions]' >> ../remote/.hg/hgrc
-  $ echo 'bookmarks =' >> ../remote/.hg/hgrc
   $ hg debugpushkey --config ui.ssh="python ../dummyssh" ssh://user@dummy/remote namespaces
   bookmarks	
   namespaces