Issue #2943527: Remove .gitignore

.gitignore

-sites/default/files
-sites/default/private
-sites/default/settings.php
-cache/
-files/
-/README.txt
-/CHANGELOG.txt
-/COPYRIGHT.txt
-/INSTALL*.txt
-/LICENSE.txt
-/MAINTAINERS.txt
-/UPGRADE.txt
-robots.txt
-codesniffer.txt
-sites/all/README.txt
-sites/all/modules/README.txt
-sites/all/themes/README.txt
-.htaccess
-
-#for non core developer
-#only include "sites" folder without exclusions before
-cron.php
-index.php
-install.php
-update.php
-xmlrpc.php
-/includes
-/misc
-/modules     
-/profiles
-/scripts
-/themes
-
-#IDE
-atlassian-ide-plugin.xml
-.idea
-
-# OS generated files #
-######################
-*~
-.DS_Store*
-.project
-.settings
-ehthumbs.db
-Icon?
-Thumbs.db
-.svn
-.directory
-logs/*
\ No newline at end of file