dev-util/devhelp: remove unused patch

Signed-off-by: Michael Mair-Keimberger <mmk@levelnine.at>
Signed-off-by: Matt Turner <mattst88@gentoo.org>

dev-util/devhelp/files/40.0-optional-introspection.patch

@@ -1,47 +0,0 @@
-From 6c982d00f9d6f03f916bb6a572e7f938cd56fa74 Mon Sep 17 00:00:00 2001
-From: Mart Raudsepp <leio@gentoo.org>
-Date: Fri, 22 Mar 2019 19:44:40 +0200
-Subject: [PATCH] build: Add optionality for introspection build
-
----
- devhelp/meson.build | 2 ++
- meson_options.txt   | 6 ++++++
- 2 files changed, 8 insertions(+)
-
-diff --git a/devhelp/meson.build b/devhelp/meson.build
-index eef055e7..eeaa51eb 100644
---- a/devhelp/meson.build
-+++ b/devhelp/meson.build
-@@ -120,6 +120,7 @@ PKG_CONFIG.generate(
-   requires_private: LIBDEVHELP_PRIVATE_DEPS
- )
- 
-+if get_option('introspection')
- GNOME.generate_gir(
-   libdevhelp_shared_lib,
-   export_packages: 'libdevhelp-@0@'.format(LIBDEVHELP_API_VERSION_FULL),
-@@ -140,3 +141,4 @@ GNOME.generate_gir(
-     '--quiet',
-   ],
- )
-+endif
-diff --git a/meson_options.txt b/meson_options.txt
-index 17dc85f5..c69a2906 100644
---- a/meson_options.txt
-+++ b/meson_options.txt
-@@ -10,6 +10,12 @@ option(
-   description: 'Build the API reference'
- )
- 
-+option(
-+  'introspection',
-+  type: 'boolean', value: true,
-+  description: 'Build GObject Introspection data'
-+)
-+
- option(
-   'plugin_emacs',
-   type: 'boolean', value: false,
--- 
-2.26.3
-