pkg-config: drop package

- unmaintained upstream
- drop confirmed by maintainer
- last local commit:
  commit: 243a1a1324
  Author: Rosen Penev <rosenp@gmail.com>
  Date:   Sat, 2 Nov 2019 11:14:50 -0700

  pkg-config: Add CONFLICTS for pkgconf

Link: https://github.com/openwrt/packages/pull/26400#issuecomment-2848120084
Signed-off-by: George Sapkin <george@sapk.in>

devel/pkg-config/Makefile

@@ -1,55 +0,0 @@
-#
-# Copyright (C) 2015-2016 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
-
-include $(TOPDIR)/rules.mk
-
-PKG_NAME:=pkg-config
-PKG_VERSION:=0.29.2
-PKG_RELEASE:=3
-
-PKG_SOURCE_URL:=https://pkg-config.freedesktop.org/releases/
-PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
-PKG_HASH:=6fc69c01688c9458a57eb9a1664c9aba372ccda420a02bf4429fe610e7e7d591
-
-PKG_MAINTAINER:=Heinrich Schuchardt <xypron.glpk@gmx.de>
-PKG_LICENSE:=GPL-2.0-or-later
-PKG_LICENSE_FILES:=COPYING
-
-PKG_INSTALL:=1
-PKG_BUILD_PARALLEL:=1
-
-include $(INCLUDE_DIR)/package.mk
-include $(INCLUDE_DIR)/nls.mk
-
-define Package/pkg-config
-  SECTION:=devel
-  CATEGORY:=Development
-  TITLE:=pkg-config
-  URL:=https://www.freedesktop.org/wiki/Software/pkg-config/
-  DEPENDS:=+glib2 $(INTL_DEPENDS)
-  CONFLICTS:=pkgconf
-endef
-
-define Package/pkg-config/description
-  pkg-config is a helper tool used when compiling applications and libraries.
-  It helps you insert the correct compiler options on the command line so an
-  application can use gcc -o test test.cpkg-config --libs --cflags glib-2.0
-  for instance, rather than hard-coding values on where to find glib (or
-  other libraries).
-endef
-
-TARGET_CFLAGS += $(FPIC)
-
-define Package/pkg-config/install
-	$(INSTALL_DIR) $(1)/usr/bin
-	$(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/bin/pkg-config $(1)/usr/bin/
-	$(INSTALL_DIR) $(1)/usr/share/aclocal/
-	$(INSTALL_DATA) $(PKG_INSTALL_DIR)/usr/share/aclocal/pkg.m4 \
-	  $(1)/usr/share/aclocal/
-endef
-
-$(eval $(call BuildPackage,pkg-config))