Fix import.

Reset the branch state due to improper import.
RHEL git ref that the branch was reset to
<d02ca0175d85719f15ea6c0354771ace7b39b92b>.

Summary:
* `.gitignore`
  Loosen the matching rules.
* `*.patch`
  Delete patches wrongly imported from another repository.

Related: rhbz#2149262

.gitignore

@@ -1,4 +1,2 @@
-SOURCES/mysql2-0.5.3-tests.txz
-SOURCES/mysql2-0.5.3.gem
-/mysql2-0.5.3-tests.txz
-/mysql2-0.5.3.gem
+/mysql2-*-tests.txz
+/mysql2-*.gem

rubygem-mysql2-0.5.3-fix-assertion-mariadb-connector-c.patch

@@ -1,22 +0,0 @@
-From cca57b97ad6d1b1b985376be110b89d2b487dea6 Mon Sep 17 00:00:00 2001
-From: Aaron Patterson <tenderlove@ruby-lang.org>
-Date: Tue, 30 Nov 2021 12:59:43 -0800
-Subject: [PATCH] fix assertion on maria
-
-downgrade psych
----
- spec/mysql2/client_spec.rb | 2 +-
-
-diff --git a/spec/mysql2/client_spec.rb b/spec/mysql2/client_spec.rb
-index 1519e0f5d..41fb834bf 100644
---- a/spec/mysql2/client_spec.rb
-+++ b/spec/mysql2/client_spec.rb
-@@ -573,7 +573,7 @@ def run_gc
-       end
-       expect do
-         @client.query("SELECT SLEEP(1)")
--      end.to raise_error(Mysql2::Error, /Lost connection to MySQL server/)
-+      end.to raise_error(Mysql2::Error, /Lost connection/)
- 
-       if RUBY_PLATFORM !~ /mingw|mswin/
-         expect do