test-ssh: remove superfluous triple slashes from absolute path test

Because pwd should start with "/", "/`pwd`" is enough to make absolute path.

tests/test-ssh.t

@@ -40,7 +40,7 b' repo not found error'
 
 non-existent absolute path
 
-  $ hg clone -e "python \"$TESTDIR/dummyssh\"" ssh://user@dummy//`pwd`/nonexistent local
+  $ hg clone -e "python \"$TESTDIR/dummyssh\"" ssh://user@dummy/`pwd`/nonexistent local
   remote: abort: there is no Mercurial repository here (.hg not found)!
   abort: no suitable response from remote hg!
   [255]
@@ -471,7 +471,7 b' debug output'
 
   $ cat dummylog
   Got arguments 1:user@dummy 2:hg -R nonexistent serve --stdio
-  Got arguments 1:user@dummy 2:hg -R /$TESTTMP/nonexistent serve --stdio
+  Got arguments 1:user@dummy 2:hg -R $TESTTMP/nonexistent serve --stdio
   Got arguments 1:user@dummy 2:hg -R remote serve --stdio
   Got arguments 1:user@dummy 2:hg -R local-stream serve --stdio
   Got arguments 1:user@dummy 2:hg -R remote serve --stdio