Remove test on separators that are not spaces.
Remove test on separators that are not spaces.

Agreed in PR #821 that this test does not add anything
useful to the exercise.

petertseng/x-common,jmluy/x-common,exercism/x-common,Vankog/problem-specifications,rpottsoh/x-common,Vankog/problem-specifications,jmluy/x-common,ErikSchierboom/x-common,petertseng/x-common,exercism/x-common,kgengler/x-common,ErikSchierboom/x-common,rpottsoh/x-common,jmluy/x-common,kgengler/x-common