Remove remote tracking tags from earlier exercises for clarity.
Remove remote tracking tags from earlier exercises for clarity.

adamcrews/explain-git-with-d3,eshimel/explain-git-with-d3,modulexcite/explain-git-with-d3,fend-classroom/explain-git-with-d3,onlywei/explain-git-with-d3,fend-classroom/explain-git-with-d3,zhengger/explain-git-with-d3,kittitochp/explain-git-with-d3,majidmosafer/jahad,git-school/visualizing-git,eshimel/explain-git-with-d3,kittitochp/explain-git-with-d3,djangocreation/explain-git-with-d3,Olipicus/explain-git-with-d3,zahrashokrollahi/explain-git-with-d3,majidmosafer/jahad,bbw14/explain-git-with-d3,Sfeir/explain-git-with-d3,zhengger/explain-git-with-d3,git-school/visualizing-git,modulexcite/explain-git-with-d3,djangocreation/explain-git-with-d3,Olipicus/explain-git-with-d3,Sfeir/explain-git-with-d3,adamcrews/explain-git-with-d3,zahrashokrollahi/explain-git-with-d3,bbw14/explain-git-with-d3,onlywei/explain-git-with-d3