Simplification of Table::is_nullable
Simplification of Table::is_nullable

The attribute will always reflect the property directly.

Change-Id: I5aac9e1402308e143861eb0df318df6534c9ae5c

realm/realm-core,realm/realm-core,realm/realm-core,realm/realm-core,realm/realm-core,realm/realm-core,realm/realm-core