dev-ruby/sinatra: undo broken ruby31 marking for sinatra 2.x

Upstream does not consider sinatra 2.x compatible with ruby 3.1 and
instead promotes to use sinatra 3.x for this. The patch that was applied
only hides some obvious symptoms. Revert the patching and the ruby31
marking.

The pull request that these changes came from was created before sinatra
3.x was released, but with 3.x there is no need for this anymore.

Signed-off-by: Hans de Graaff <graaff@gentoo.org>

dev-ruby/sinatra/files/backport-pr-1519.patch

@@ -1,122 +0,0 @@
-https://github.com/sinatra/sinatra/pull/1519
-
-From 6d34a2a1bee48961c25e1b53edac874a31c42060 Mon Sep 17 00:00:00 2001
-From: Jordan Owens <jkowens@gmail.com>
-Date: Thu, 31 Jan 2019 22:32:45 -0500
-Subject: [PATCH] Internal Sinatra errors now extend Sinatra::Error
-
-By extending Sinatra::Error, an error class can set the http status
-code on the response to a value other than 500. This commit fixes
-issues #1204 and #1518 where an error raised by a third party library
-that responded to http_status could set the status on the response.
-Any error outside of Sinatra errors will now always return a 500 status.
-
-This fixes an issue where an exception could leak sensitive data in
-the message to the browser. Errors that have http_status code 400 or
-404 use the message as the body of the response. This is why it is
-imperative that these errors extend Sinatra::Error so that this is
-an explicit decision.
----
- lib/sinatra/base.rb       | 22 ++++++++++++++--------
- test/mapped_error_test.rb |  6 +++---
- test/result_test.rb       | 15 +++++++++++++++
- 3 files changed, 32 insertions(+), 11 deletions(-)
-
-diff --git a/lib/sinatra/base.rb b/lib/sinatra/base.rb
-index 6dbb3ae57..4dfc9a8ae 100644
---- a/lib/sinatra/base.rb
-+++ b/lib/sinatra/base.rb
-@@ -255,11 +255,14 @@ def call(env)
-     end
-   end
- 
--  class BadRequest < TypeError #:nodoc:
-+  class Error < StandardError #:nodoc:
-+  end
-+
-+  class BadRequest < Error #:nodoc:
-     def http_status; 400 end
-   end
- 
--  class NotFound < NameError #:nodoc:
-+  class NotFound < Error #:nodoc:
-     def http_status; 404 end
-   end
- 
-@@ -1149,14 +1152,17 @@ def handle_exception!(boom)
-       end
-       @env['sinatra.error'] = boom
- 
--      if boom.respond_to? :http_status and boom.http_status.between? 400, 599
--        status(boom.http_status)
--      elsif settings.use_code? and boom.respond_to? :code and boom.code.between? 400, 599
--        status(boom.code)
--      else
--        status(500)
-+      http_status = if boom.kind_of? Sinatra::Error
-+        if boom.respond_to? :http_status
-+          boom.http_status
-+        elsif settings.use_code? && boom.respond_to?(:code)
-+          boom.code
-+        end
-       end
- 
-+      http_status = 500 unless http_status && http_status.between?(400, 599)
-+      status(http_status)
-+
-       if server_error?
-         dump_errors! boom if settings.dump_errors?
-         raise boom if settings.show_exceptions? and settings.show_exceptions != :after_handler
-diff --git a/test/mapped_error_test.rb b/test/mapped_error_test.rb
-index cb158a268..562e509dc 100644
---- a/test/mapped_error_test.rb
-+++ b/test/mapped_error_test.rb
-@@ -6,15 +6,15 @@ class FooError < RuntimeError
- class FooNotFound < Sinatra::NotFound
- end
- 
--class FooSpecialError < RuntimeError
-+class FooSpecialError < Sinatra::Error
-   def http_status; 501 end
- end
- 
--class FooStatusOutOfRangeError < RuntimeError
-+class FooStatusOutOfRangeError < Sinatra::Error
-   def code; 4000 end
- end
- 
--class FooWithCode < RuntimeError
-+class FooWithCode < Sinatra::Error
-   def code; 419 end
- end
- 
-diff --git a/test/result_test.rb b/test/result_test.rb
-index cbb781319..67d163fc4 100644
---- a/test/result_test.rb
-+++ b/test/result_test.rb
-@@ -1,5 +1,9 @@
- require File.expand_path('../helper', __FILE__)
- 
-+class ThirdPartyError < RuntimeError
-+  def http_status; 400 end
-+end
-+
- class ResultTest < Minitest::Test
-   it "sets response.body when result is a String" do
-     mock_app { get('/') { 'Hello World' } }
-@@ -73,4 +77,15 @@ def res.each ; yield call ; end
-     assert_equal 205, status
-     assert_equal '', body
-   end
-+
-+  it "sets status to 500 when raised error is not Sinatra::Error" do
-+    mock_app do
-+      set :raise_errors, false
-+      get('/') { raise ThirdPartyError }
-+    end
-+
-+    get '/'
-+    assert_equal 500, status
-+    assert_equal '<h1>Internal Server Error</h1>', body
-+  end
- end

dev-ruby/sinatra/sinatra-2.2.0-r1.ebuild

@@ -2,7 +2,7 @@
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
-USE_RUBY="ruby26 ruby27 ruby30 ruby31"
+USE_RUBY="ruby27 ruby30"
 
 RUBY_FAKEGEM_TASK_TEST="MT_NO_PLUGINS=true test:core"
 
@@ -21,10 +21,6 @@ SLOT="2"
 KEYWORDS="amd64 ~arm ~arm64 ~hppa ~ppc ~ppc64 ~riscv ~sparc ~x86"
 IUSE=""
 
-# https://github.com/sinatra/sinatra/pull/1519 from master.
-# https://github.com/sinatra/sinatra/issues/1774
-PATCHES=( "${FILESDIR}/backport-pr-1519.patch" )
-
 ruby_add_rdepend "
 	dev-ruby/mustermann:1
 	dev-ruby/rack:2.2

dev-ruby/sinatra/sinatra-2.2.1.ebuild

@@ -2,7 +2,7 @@
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
-USE_RUBY="ruby27 ruby30 ruby31"
+USE_RUBY="ruby27 ruby30"
 
 RUBY_FAKEGEM_TASK_TEST="MT_NO_PLUGINS=true test:core"
 
@@ -21,10 +21,6 @@ SLOT="2"
 KEYWORDS="~amd64 ~arm ~arm64 ~hppa ~ppc ~ppc64 ~riscv ~sparc ~x86"
 IUSE=""
 
-# https://github.com/sinatra/sinatra/pull/1519
-# https://github.com/sinatra/sinatra/issues/1774
-PATCHES=( "${FILESDIR}/backport-pr-1519.patch" )
-
 ruby_add_rdepend "
 	dev-ruby/mustermann:1
 	dev-ruby/rack:2.2