FieldCollectionItem.php

Revert "Issue #3525331 by nicxvan, ghost of drupal past, dww, larowlan, andypost, moshe weitzman, godotislate, nod_, kingdutch, pdureau, tim.plunkett, phenaproxima, catch, donquixote: Reuse element plugins as object wrappers around render arrays"

This reverts commit 32b37dee.