Revert "Update copyright years in various files"

This reverts commit c0cad1686956955556e9f0f0db29438ec12260b6.
Revert "Add 'git@github.com:/dmashal/BitchX1.2.git/' from commit 'c0cad1686956955556e9f0f0db29438ec12260b6'"

This reverts commit 54faad23e67d242fb128edf472ee46d35b55f217.