Clean Libcros's grave

BUG=chromium:127051
TEST=None

Change-Id: I1bb403911d1da21124667a5dba9b36386dbe5349
Reviewed-on: https://gerrit.chromium.org/gerrit/26094
Commit-Ready: Ryo Hashimoto <hashimoto@chromium.org>
Reviewed-by: Ryo Hashimoto <hashimoto@chromium.org>
Tested-by: Ryo Hashimoto <hashimoto@chromium.org>
diff --git a/.gitignore b/.gitignore
deleted file mode 100644
index 7d720f1..0000000
--- a/.gitignore
+++ /dev/null
@@ -1,17 +0,0 @@
-#
-# NOTE! Please use 'git ls-files -i --exclude-standard'
-# command after changing this file, to see if there are
-# any tracked files which get ignored after the change.
-#
-
-# Standard ignores
-*.Makefile
-*.a
-*.la
-*.lo
-*.mk
-*.o
-*.pyc
-*.sconsign.dblite
-*.so
-*~