.gitignore: strip down to repo-specific suppressions

Maintaining a list of all the temp files used by various editors and
IDEs is cumbersome. Instead of doing that in each repo, developers
contributing to kubernetes-csi should set up a global .gitignore for
their own tools.

.gitignore

@@ -1,54 +1 @@
-# -*- mode: gitignore; -*-
-*~
-\#*\#
-/.emacs.desktop
-/.emacs.desktop.lock
-*.elc
-auto-save-list
-tramp
-.\#*
-
-# Vscode files
-.vscode
-
-# Org-mode
-.org-id-locations
-*_archive
-
-# flymake-mode
-*_flymake.*
-
-# eshell files
-/eshell/history
-/eshell/lastdir
-
-# elpa packages
-/elpa/
-
-# reftex files
-*.rel
-
-# AUCTeX auto folder
-/auto/
-
-# cask packages
-.cask/
-dist/
-
-# Flycheck
-flycheck_*.el
-
-
-.idea/
-/.project
-*.iml
-
-# ignore build directory
-_output/
-
-
-# vim
-*.swp
-
-# bin 
-bin/
+/bin