[fix] fix minor issue in gitignore file. (#8694)

.gitignore

@@ -12,10 +12,8 @@ vendor/phantomjs/phantomjs
 
 docs/AWS_S3_BUCKET
 docs/GIT_BRANCH
-docs/VERSION
 docs/GITCOMMIT
 docs/changed-files
-docs/changed-files
 
 # locally required config files
 public/css/*.min.css