travis: no need to clean out the test repository

This was added to avoid the remote's default branch to be considered to
the be notes one which the first network test leaves behind.

script/cibuild.sh

@@ -41,7 +41,5 @@ export GITTEST_REMOTE_SSH_PASSPHRASE=""
 
 if [ -e ./libgit2_clar ]; then
     ./libgit2_clar -sonline::push -sonline::clone::cred_callback &&
-    rm -rf $HOME/_temp/test.git &&
-    git init --bare $HOME/_temp/test.git && # create an empty one
     ./libgit2_clar -sonline::clone::ssh_with_paths
 fi