Fixed minor bug in the ensight gold reader.

Was not skipping bar3 elements properly. Also removed
warnings that were no longer necessary. This reader now
supports higher order elements.

Change-Id: I9f89100d2a67fb704cdc59900d2fce16e7349c0f
Merge topic 'ensightgold-bugfix' into master

6066b788 Fixed minor bug in the ensight gold reader.