Revert "course.py module that contains a class, Course."

This reverts commit 6f04c32ace897833897c1517db5a2b969bc3c14b.
Revert "test"

This reverts commit 19e64c01a528711111f79d83e0d00429d2dd0d1d.
Revert "course.py"

This reverts commit 1fdb295f2f05addc7c36e4c3ce20c62c750367d8.
Revert "Test"

This reverts commit cc32b686b6327fa46522aab6956cbd2a37419ad9.