Fixing test failure on Chrome 33
Remove antipodal test cases

The Vincenty formula can fail to converge for antipodal points (see http://en.wikipedia.org/wiki/Vincenty's_formulae#Nearly_antipodal_points), so those test cases are removed.  These tests fail with the latest V8 due to optimization of trig functions with lookup tables.  For example, Math.cos(Math.PI / 2) is no longer calculated based on the value of Math.PI / 2 (which is different than the actual value of π / 2).  Instead, values close to multiples of π / 2 are determined to be 0 (which is arguably what you want).  Previously the tests were relying on very small numbers being returned in this case.
Removing repeated test cases
More repeated test cases