Remove unused /dashboard/config/blocks.csv
Remove unused /dashboard/config/blocks.csv

Ref was removed in https://github.com/code-dot-org/dashboard/pull/421/files#diff-835cbf4e45714fbad7a54685837fab8cL24

ty-po/code-dot-org,rvarshney/code-dot-org,bakerfranke/code-dot-org,bakerfranke/code-dot-org,pickettd/code-dot-org,pickettd/code-dot-org,bakerfranke/code-dot-org,rvarshney/code-dot-org,pickettd/code-dot-org,cloud3edu/code-dot-org-old,pickettd/code-dot-org,ty-po/code-dot-org,bakerfranke/code-dot-org,bakerfranke/code-dot-org,pickettd/code-dot-org,cloud3edu/code-dot-org-old,ty-po/code-dot-org,rvarshney/code-dot-org,cloud3edu/code-dot-org-old,rvarshney/code-dot-org,ty-po/code-dot-org,bakerfranke/code-dot-org,ty-po/code-dot-org,dillia23/code-dot-org,dillia23/code-dot-org,rvarshney/code-dot-org,dillia23/code-dot-org,cloud3edu/code-dot-org-old,dillia23/code-dot-org,dillia23/code-dot-org,rvarshney/code-dot-org,pickettd/code-dot-org,cloud3edu/code-dot-org-old,ty-po/code-dot-org,cloud3edu/code-dot-org-old,bakerfranke/code-dot-org,ty-po/code-dot-org,rvarshney/code-dot-org,rvarshney/code-dot-org,dillia23/code-dot-org,dillia23/code-dot-org,pickettd/code-dot-org,dillia23/code-dot-org,pickettd/code-dot-org,ty-po/code-dot-org,cloud3edu/code-dot-org-old