Remove TurbineType parameter

[hkross]

This pull request is ready to be merged.

Issue #1604 identified a couple of bugs in determining TurbineType. This parameter is used for the following:

• a check that floating systems have a non-negative TowerBsHt in ElastoDyn
• a check that AD14 doesn't use its tower influence model for floating systems (that model assumes the tower doesn't move from its initial position)
• a check that offshore fixed and floating turbines use TurbinePos(3)=0 (for FAST.Farm)
• printing to the OpenFAST summary file

Per discussion with @jjonkman, @andrew-platt, and @luwang00, it was determined that the TurbineType parameter and associated checks should be removed.

This pull request impacts the OpenFAST glue code. All existing r-tests pass and no new tests are required.

[andrew-platt]

Looks good!