Remove styles String instance test
Remove styles String instance test

Removed in https://github.com/google/incremental-dom/commit/1a50d00c3627207f97e6536adb0f501164bfd372

paolocaminiti/incremental-dom,YOTOV-LIMITED/incremental-dom,google/incremental-dom,markuskobler/incremental-dom,google/incremental-dom,paolocaminiti/incremental-dom,PolymerLabs/incremental-dom,PolymerLabs/incremental-dom,jridgewell/incremental-dom,sparhami/incremental-dom,jridgewell/incremental-dom,Rich-Harris/incremental-dom,PolymerLabs/incremental-dom,YOTOV-LIMITED/incremental-dom,jridgewell/incremental-dom,Rich-Harris/incremental-dom,reggi/incremental-dom,sparhami/incremental-dom,sparhami/incremental-dom,markuskobler/incremental-dom,sparhami/incremental-dom,reggi/incremental-dom,google/incremental-dom