libantlr3c: drop package

- unmaintained upstream
- drop confirmed by maintainer
- last local commit:
  commit: 7751997919
  Author: Rosen Penev <rosenp@gmail.com>
  Date:   Sun, 8 Jul 2018 19:51:17 -0700

  libantlr3c: Update to 3.4

Link: https://github.com/openwrt/packages/pull/26400#issuecomment-2848168367
Signed-off-by: George Sapkin <george@sapk.in>

libs/libantlr3c/Makefile

@@ -1,56 +0,0 @@
-#
-# Copyright (C) 2006-2014 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
-
-include $(TOPDIR)/rules.mk
-
-PKG_NAME:=libantlr3c
-PKG_VERSION:=3.4
-PKG_RELEASE:=1
-PKG_HASH:=ca914a97f1a2d2f2c8e1fca12d3df65310ff0286d35c48b7ae5f11dcc8b2eb52
-
-PKG_SOURCE_URL:=https://www.antlr3.org/download/C
-PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
-PKG_BUILD_PARALLEL:=1
-PKG_INSTALL:=1
-
-PKG_MAINTAINER:=Espen Jürgensen <espenjurgensen+openwrt@gmail.com>
-PKG_LICENSE:=BSD-2-Clause
-PKG_LICENSE_FILES:=COPYING
-
-include $(INCLUDE_DIR)/package.mk
-
-define Package/libantlr3c
-  SECTION:=libs
-  CATEGORY:=Libraries
-  TITLE:=libantlr3c
-  URL:=https://www.antlr3.org/
-endef
-
-define Package/libantlr3c/description
-  ANother Tool for Language Recognition, is a language tool that provides a framework for constructing recognizers,
-  interpreters, compilers, and translators from grammatical descriptions containing actions in a variety of target languages.
-endef
-
-TARGET_CFLAGS += $(FPIC)
-
-CONFIGURE_ARGS += \
-	--enable-shared \
-	--enable-static
-
-define Build/InstallDev
-	$(INSTALL_DIR) $(1)/usr/include
-	$(CP) $(PKG_INSTALL_DIR)/usr/include/*.h $(1)/usr/include/
-	$(INSTALL_DIR) $(1)/usr/lib
-	$(CP) $(PKG_INSTALL_DIR)/usr/lib/libantlr3c.{a,so} $(1)/usr/lib/
-endef
-
-define Package/libantlr3c/install
-	$(INSTALL_DIR) $(1)/usr/lib
-	$(CP) $(PKG_INSTALL_DIR)/usr/lib/libantlr3c.so  $(1)/usr/lib/
-endef
-
-$(eval $(call BuildPackage,libantlr3c))