Delete ccanova* in favour of anova.cca*

When anova.cca* switched to parallel processing, the old code was
backed up as ccanova* functions. Now these functions were removed
and only the new anova.cca* functions remain
fix a typo
Merge pull request #41 from jarioksa/parallel

Delete ccanova* in favour of anova.cca*
Merge remote-tracking branch 'upstream/master'