Remove duplicate VersionInfo class
Remove duplicate VersionInfo class

This was brought over during the CI merge and already exists at
`lib/gitlab/version_info.rb`.

daiyu/gitlab-zh,stoplightio/gitlabhq,daiyu/gitlab-zh,mmkassem/gitlabhq,shinexiao/gitlabhq,jirutka/gitlabhq,LUMC/gitlabhq,allysonbarros/gitlabhq,dreampet/gitlab,stoplightio/gitlabhq,dplarson/gitlabhq,darkrasid/gitlabhq,mmkassem/gitlabhq,screenpages/gitlabhq,allysonbarros/gitlabhq,dreampet/gitlab,t-zuehlsdorff/gitlabhq,t-zuehlsdorff/gitlabhq,mmkassem/gitlabhq,dplarson/gitlabhq,mmkassem/gitlabhq,screenpages/gitlabhq,htve/GitlabForChinese,iiet/iiet-git,icedwater/gitlabhq,jirutka/gitlabhq,darkrasid/gitlabhq,t-zuehlsdorff/gitlabhq,stoplightio/gitlabhq,jirutka/gitlabhq,dplarson/gitlabhq,screenpages/gitlabhq,openwide-java/gitlabhq,stoplightio/gitlabhq,openwide-java/gitlabhq,shinexiao/gitlabhq,icedwater/gitlabhq,shinexiao/gitlabhq,allysonbarros/gitlabhq,darkrasid/gitlabhq,daiyu/gitlab-zh,allysonbarros/gitlabhq,darkrasid/gitlabhq,screenpages/gitlabhq,htve/GitlabForChinese,jirutka/gitlabhq,dreampet/gitlab,daiyu/gitlab-zh,openwide-java/gitlabhq,shinexiao/gitlabhq,axilleas/gitlabhq,axilleas/gitlabhq,icedwater/gitlabhq,LUMC/gitlabhq,dreampet/gitlab,htve/GitlabForChinese,openwide-java/gitlabhq,iiet/iiet-git,t-zuehlsdorff/gitlabhq,LUMC/gitlabhq,axilleas/gitlabhq,LUMC/gitlabhq,axilleas/gitlabhq,htve/GitlabForChinese,iiet/iiet-git,dplarson/gitlabhq,icedwater/gitlabhq,iiet/iiet-git