MAINT: Change the patch to unlink before creation
MAINT: Change the patch to unlink before creation

Instead of just blindly creating a new mapping file, this patch will
find and remove the previously existing files and remove them _and_ then
create the mapping file.

josenavas/QiiTa,squirrelo/qiita,biocore/qiita,wasade/qiita,RNAer/qiita,squirrelo/qiita,josenavas/QiiTa,adamrp/qiita,antgonza/qiita,wasade/qiita,adamrp/qiita,RNAer/qiita,biocore/qiita,biocore/qiita,antgonza/qiita,ElDeveloper/qiita,josenavas/QiiTa,antgonza/qiita,RNAer/qiita,squirrelo/qiita,ElDeveloper/qiita,RNAer/qiita,antgonza/qiita,josenavas/QiiTa,wasade/qiita,biocore/qiita,adamrp/qiita,squirrelo/qiita,ElDeveloper/qiita,adamrp/qiita,ElDeveloper/qiita