Revert "prevent newblock message triggered sync if already in sync"
Revert "prevent newblock message triggered sync if already in sync"

This reverts commit 9a932c2f82ac6fd7db1b4dba0d7bd6e001d940f6.

changwu-tw/pyethapp,ethereum/pyethapp,gsalgado/pyethapp,ethereum/pyethapp,gsalgado/pyethapp,changwu-tw/pyethapp