https://git.ruby-lang.org/ruby.git/commit/?id=17715153e5

From 17715153e5cb651b91eab097c561add7ffd2eb97 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@r...>
Date: Tue, 28 Jan 2020 22:22:29 +0900
Subject: Revert "Added RDoc files to parse [Bug #16596]"

This reverts commit 10842daeb571126a090cb10dedf0cda8c2b7f9a8,
because it has no effect and the rdoc file has been installed to
lib/racc/rdoc directory.

diff --git a/lib/racc/.document b/lib/racc/.document
deleted file mode 100644
index 8ade51b..0000000
--- a/lib/racc/.document
+++ /dev/null
@@ -1 +0,0 @@
-rdoc/*.rdoc
-- 
cgit v0.10.2


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