remove unused variables

They're unused since 4b85baa9a11b4a51f92a2bc042d177f79b269b92
el-get-init-and-install: handle new :depends

If a package to be init'd has new dependencies, simply install them
rather than throwing an error about missing packages. A warning about
changing non-whitelisted properties is still issued.
Merge pull request #1594 from npostavs/new-dep

Handle change in :depends