Get rid of unused parameter RecalcStyleBehavior

This patch gets rid of unused parameter |RecalcStyleBehavior| from
 - CharacterData::deleteData()
 - CharacterData::insertData()
 - and called functions from them
to reduce code size for improving code health.

BUG=n/a
TEST=n/a; no behavior

Review-Url: https://codereview.chromium.org/2106863006
Cr-Commit-Position: refs/heads/master@{#403100}
4 files changed