Revert "Prevent NPE in Mojarra when creating initial view"

This reverts commit d31900e5f961828791c1e65095c3df698b327db4.

The fix for SWF-1571 reported against Mojarra 2.1.8 seems to be
problematic when Web Flow's ResponseStateManager is not used as
reported in SWF-1630.

Testing with Mojarra 2.1.20 I can no longer reproduce SWF-1571
and originally it was suspected to be a Mojarra issue. Hence
this revert.

Issue: SWF-1571, SWF-1630