Remove git remote references

Puppet librarian ignores git remote information when a git ref is
specified for a module, but r10k (https://github.com/adrienthebo/r10k)
assumes that they are part of the ref and errors out.  This patch
removes all remote references since they are unnecessary.

Change-Id: I968099dbff66333c2ccd14702b1118c55c1b6019
Closes-Bug: 1284769
Merge "Remove git remote references"