mtr 0.87

- add a test
- remove upstreamed patch

Closes #3585.

Signed-off-by: ilovezfs <ilovezfs@icloud.com>

Formula/mtr.rb

@@ -1,20 +1,10 @@
 class Mtr < Formula
   desc "'traceroute' and 'ping' in a single tool"
   homepage "https://www.bitwizard.nl/mtr/"
+  url "https://github.com/traviscross/mtr/archive/v0.87.tar.gz"
+  sha256 "ac177953e7c834d5326fc52d63377b6d0b42d05db8017556390629b87e44e183"
   head "https://github.com/traviscross/mtr.git"
 
-  stable do
-    url "https://github.com/traviscross/mtr/archive/v0.86.tar.gz"
-    sha256 "7912f049f9506748913e2866068b7f95b11a4e0a855322120b456c46ac9eb763"
-
-    # Fix an issue where default shell colors were overridden by mtr.
-    # https://github.com/Homebrew/homebrew/issues/43862
-    patch do
-      url "https://github.com/traviscross/mtr/commit/63a1f1493bfbaf7e55eb7e20b3791fc8b14cf92d.patch"
-      sha256 "67d682b29fca49d703f48bb2844e1c0e4b4635d0645d139a13352d9575336194"
-    end
-  end
-
   bottle do
     cellar :any_skip_relocation
     revision 1
@@ -48,4 +38,9 @@ class Mtr < Formula
     You should be certain that you trust any software you grant root privileges.
     EOS
   end
+
+  test do
+    output = shell_output("#{sbin}/mtr --help 2>&1", 1)
+    assert_equal "mtr: unable to get raw sockets.", output.chomp
+  end
 end